CN114731883A - Phoebe sheareri seedling cultivation method - Google Patents
Phoebe sheareri seedling cultivation method Download PDFInfo
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- 241001096799 Phoebe sheareri Species 0.000 title claims abstract description 7
- 238000012364 cultivation method Methods 0.000 title claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 236
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 118
- 230000004720 fertilization Effects 0.000 claims abstract description 99
- 238000011282 treatment Methods 0.000 claims abstract description 88
- 238000000034 method Methods 0.000 claims abstract description 38
- 239000002689 soil Substances 0.000 claims abstract description 25
- 241000604739 Phoebe Species 0.000 claims abstract description 24
- 238000005580 one pot reaction Methods 0.000 claims abstract description 11
- 241001092500 Photinia x fraseri Species 0.000 claims abstract description 7
- 238000002054 transplantation Methods 0.000 claims abstract description 3
- 241000371484 Machilus nanmu Species 0.000 claims description 19
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 11
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims description 11
- 239000011574 phosphorus Substances 0.000 claims description 11
- 239000011591 potassium Substances 0.000 claims description 11
- 229910052700 potassium Inorganic materials 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 2
- 241000196324 Embryophyta Species 0.000 abstract description 23
- 239000003337 fertilizer Substances 0.000 abstract description 19
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000002028 Biomass Substances 0.000 description 15
- 238000003306 harvesting Methods 0.000 description 11
- 241001092035 Photinia Species 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000000750 progressive effect Effects 0.000 description 5
- 244000258539 Epigaea repens Species 0.000 description 4
- 241000604742 Machilus thunbergii Species 0.000 description 4
- 235000004267 Persea thunbergii Nutrition 0.000 description 4
- 235000015097 nutrients Nutrition 0.000 description 4
- 241001243666 Photinia serratifolia Species 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241001337998 Machilus Species 0.000 description 2
- -1 hydrogen Chemical class 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 239000000618 nitrogen fertilizer Substances 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 241000218195 Lauraceae Species 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 235000006286 nutrient intake Nutrition 0.000 description 1
- 235000021048 nutrient requirements Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/40—Afforestation or reforestation
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Sciences (AREA)
- Botany (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Cultivation Of Plants (AREA)
- Fertilizers (AREA)
Abstract
A method for cultivating a Phoebe sheareri seedling comprises the following steps: (1) selecting 2-year-old seedlings of the phoebe nannieri in 3 months per year, transplanting the seedlings into a culture pot, and filling 10kg of culture soil into the culture pot to ensure that one pot of seedlings is matched with one tray; (2) performing first nitrogen fertilization treatment 20-40 days after transplantation, wherein the interval of nitrogen fertilization for each time is 30-40 days, and 6 index fertilization are counted; wherein the total nitrogen content of 6 times is 600-1800mg per plant‑1(ii) a (3) And shading treatment is carried out for 40% -80% while the first nitrogen fertilization treatment is carried out, wherein the shading treatment time is 5-7 months. The nitrogen fertilization method provided by the invention is cooperated with shading treatment, and is beneficial to the growth of the Phoebe Temminck seedlings in high diameter. Applying exponential fertilizer (1200 mg. plant)‑1) When the method is used for shading treatment (40 percent shading), the method is favorable for improving the seedling quality index of the photinia fraseri seedlings, and simultaneouslySaves fertilizer and improves the utilization efficiency of nitrogen.
Description
Technical Field
The invention relates to the technical field of nursery stock cultivation, in particular to a cultivation method of a phoebe nana nursery stock.
Background
The Phoebe Machilus is a relatively cold-resistant species of Phoebe Machilus of genus Phoebe of family Lauraceae, and is naturally distributed in broad-leaved forest in mountainous regions with south height of less than 1000m in Yangtze river basin. The phoebe nanmu is not only known to be excellent in material, but also is an excellent landscaping tree species.
At present, the research on the cultivation of the phoebe nanmu seedlings is less. The quality of the nursery stock affects the afforestation effect, and the premise of improving the afforestation success rate is to cultivate high-quality nursery stock. One of the primary factors influencing the growth and development of plants is fertilization, and the seedling quality can be improved by applying nitrogen in production, but in practice, the utilization efficiency of nitrogen fertilizer is often low, and how to improve the utilization efficiency of nitrogen fertilizer becomes a problem to be solved increasingly.
Disclosure of Invention
The invention aims to provide the method for cultivating the phoebe nanmu seedlings, the quality of the seedlings cultivated by the method is high, meanwhile, the fertilizer utilization efficiency can be effectively improved, the residual pollution of the fertilizer is reduced, and the purpose of protecting the environment is achieved.
In order to achieve the purpose, the invention provides a method for cultivating a phoebe nanmu seedling, which comprises the following steps:
(1) selecting 2-year-old seedlings of the phoebe nannieri in 3 months per year, transplanting the seedlings into a culture pot, and filling 10kg of culture soil into the culture pot to ensure that one pot of seedlings is matched with one tray;
(2) after 20-40 days of transplantation, performing first nitrogen fertilization treatment, and then fertilizing 6 times at a nitrogen fertilization interval of 30-40 days; wherein the total amount of nitrogen for 6 times is 600-1800mg per plant-1;
preferably, in the step (1), the culture soil is sandy loam, the condition of the sandy loam is suitable for the growth of the photinia fraseri seedlings, and the seedling roots are prevented from being rotten due to heavy soil and poor drainage.
Preferably, the pH value of the sandy loam prepared in the step (1) is 6.8, and the quick-acting potassium is 15.49 mg/kg-1Quick-acting phosphorus 2.28 mg/kg-1Quick-acting nitrogen 14.65 mg/kg-1The PH and the nutrient substances are blended, so that the growth of the Phoebe chinensis seedlings can be met, and a good seedbed foundation is provided for seedling cultivation.
Preferably, in the step (2), the nitrogen fertilization adopts an index fertilization mode, and the index fertilization processing is determined by referring to a Timmer formula, which specifically comprises the following steps:
NT＝NS(ert-1) (1)
Nt＝NS(ert-1)-Nt-1 (2)
in the formula: n is a radical ofTIs the total amount of nitrogen administered, NSThe initial nitrogen content of the Phoebe Photinia seedling plants before the test, T is the current index fertilization times, T is the total fertilization times, r is the nitrogen addition rate, NtI.e. the amount of nitrogen applied at the t-th time at rate r, Nt-1Is the total nitrogen application amount including the t-1 st time. Initial nitrogen content N of Photinia serrulata seedlingsS30.25 mg/strain-1。
Preferably, the total amount of 6 nitrogens in step (2) is 1200mg per plant-1。
Preferably, the method further comprises the step (3) of shading the fertilizer from the first nitrogen fertilization treatment at the same time, wherein the shading treatment time is 5-7 months.
Preferably, the shading treatment in the step (3) is 40 to 80 percent.
Preferably, the shading treatment in step (3) is 40%.
The invention has the following advantages:
1. the nitrogen fertilization method provided by the invention is cooperated with the shading treatment, so that the high-diameter growth of the Phoebe sinensis seedlings is facilitated;
2. according to the invention, a nitrogen index increasing mode is adopted, so that the nutrient requirements of different growth stages of plants can be met to the greatest extent, and luxury nutrient consumption of seedlings is induced, thus the internal nutrient load of the plants is improved, and the seedling competitiveness is enhanced;
3. the invention adopts a nitrogen index increasing mode, and compared with the traditional fertilization (uniform fertilization), the yield and the quality of the cultivated nursery stock are higher;
4. the nitrogen fertilization method and the shady treatment cooperative cultivation method provided by the invention can effectively reduce fertilizer application and achieve the purpose of environmental protection.
Detailed Description
Example one
A method for cultivating a phoebe nanmu seedling comprises the following steps:
(1) selecting 2-year-old seedlings of the phoebe nannieri in 3 months and 10 days, transplanting the seedlings into a culture pot, and filling 10kg of culture soil into the culture pot to ensure that seedlings are planted in one pot and a tray is arranged in the other pot; wherein the culture soil is sandy loam, pH is adjusted to 6.8, and the quick-acting potassium is 15.49 mg/kg-1Quick-acting phosphorus 2.28 mg/kg-1Quick-acting nitrogen14.65mg·kg-1。
(2) Performing first nitrogen fertilization for 4 months and 1 day, and applying the fertilizer for 6 times in total at a nitrogen fertilization interval of 1 month, wherein the total nitrogen content of 6 times is 600mg per plant-1Namely the fertilizing amount is 100mg per time-1；
(3) And (3) shading treatment is carried out for 40 percent at the same time of the first nitrogen fertilization treatment, and the shading treatment time is 6 months.
Example two
A method for cultivating a Phoebe sheareri seedling comprises the following steps:
(1) selecting 2-year-old seedlings of the phoebe nannieri in 3 months and 10 days, transplanting the seedlings into a culture pot, and filling 10kg of culture soil into the culture pot to ensure that seedlings are planted in one pot and a tray is arranged in the other pot; wherein the culture soil is sandy loam, pH is adjusted to 6.8, and the quick-acting potassium is 15.49 mg/kg-1Quick-acting phosphorus 2.28 mg/kg-1Quick-acting nitrogen 14.65 mg/kg-1。
(2) Performing first nitrogen fertilization for 4 months and 1 day, applying nitrogen fertilization for 6 times at a nitrogen fertilization interval of 1 month, wherein the total nitrogen amount of 6 times is 1200mg per plant-1Namely the fertilizer application amount is 200mg per plant-1；
(3) And (3) shading treatment of 40% is carried out at the same time of the first nitrogen fertilization treatment, and the shading treatment time is 6 months.
EXAMPLE III
A method for cultivating a phoebe nanmu seedling comprises the following steps:
(1) selecting 2-year-old seedlings of the phoebe nannieri in 3 months and 10 days, transplanting the seedlings into a culture pot, and filling 10kg of culture soil into the culture pot to ensure that seedlings are planted in one pot and a tray is arranged in the other pot; wherein the culture soil is sandy loam, pH is adjusted to 6.8, and the quick-acting potassium is 15.49 mg/kg-1Quick-acting phosphorus 2.28 mg/kg-1Quick-acting nitrogen 14.65 mg/kg-1。
(2) Performing first nitrogen fertilization for 4 months and 1 day, applying nitrogen fertilization for 6 times at a nitrogen fertilization interval of 1 month, wherein the total nitrogen amount of 6 times is 1800mg per plant-1That is, the fertilizer application amount is 300mg per plant-1；
(3) And (3) shading treatment of 40% is carried out at the same time of the first nitrogen fertilization treatment, and the shading treatment time is 6 months.
Example four
A method for cultivating a phoebe nanmu seedling comprises the following steps:
(1) selecting 2-year-old seedlings of the phoebe nannieri in 3 months and 10 days, transplanting the seedlings into a culture pot, and filling 10kg of culture soil into the culture pot to ensure that seedlings are planted in one pot and a tray is arranged in the other pot; wherein the culture soil is sandy loam, pH is adjusted to 6.8, and the quick-acting potassium is 15.49 mg/kg-1Quick-acting phosphorus 2.28 mg/kg-1Quick-acting nitrogen 14.65 mg/kg-1。
(2) Performing first nitrogen fertilization treatment in 1 day after 4 months, wherein the nitrogen fertilization interval is 1 month after each time, and fertilizing for 6 times in total; wherein the total amount of nitrogen of 6 times is 600mg per plant-1(ii) a The nitrogen fertilization adopts an index fertilization mode, and the index fertilization treatment is determined according to a Timmer formula, and the method specifically comprises the following steps:
NT＝NS(ert-1) (1)
Nt＝NS(ert-1)-Nt-1 (2)
in the formula: n is a radical ofTIs the total amount of nitrogen administered, NSThe initial nitrogen content of the Phoebe sheareri seedling plants before the test, T is the current index fertilization times, T is the total fertilization times, r is the nitrogen addition rate, NtI.e. the amount of nitrogen applied at the t-th time at rate r, Nt-1Is the total nitrogen application amount including the t-1 st time.
(3) And (3) shading treatment is carried out for 40 percent at the same time of the first nitrogen fertilization treatment, and the shading treatment time is 6 months.
EXAMPLE five
A method for cultivating a phoebe nanmu seedling comprises the following steps:
(1) selecting 2-year-old seedlings of the phoebe nannieri in 3 months and 10 days, transplanting the seedlings into a culture pot, and filling 10kg of culture soil into the culture pot to ensure that seedlings are planted in one pot and a tray is arranged in the other pot; wherein the culture soil is sandy loam, pH is adjusted to 6.8, and the quick-acting potassium is 15.49 mg/kg-1Quick-acting phosphorus 2.28 mg/kg-1Quick-acting nitrogen 14.65 mg/kg-1。
(2) Performing nitrogen fertilization for the first time in 1 day 4 months, and then performing nitrogen fertilization for each timeFertilizing interval is 1 month, fertilizing for 6 times; wherein the total amount of nitrogen of 6 times is 1200mg per plant-1(ii) a The nitrogen fertilization adopts an index fertilization mode, and the index fertilization treatment is determined according to a Timmer formula, and the method specifically comprises the following steps:
NT＝NS(ert-1) (1)
Nt＝NS(ert-1)-Nt-1 (2)
in the formula: n is a radical of hydrogenTFor the total amount of nitrogen administered, NSThe initial nitrogen content of the Phoebe Photinia seedling plants before the test, T is the current index fertilization times, T is the total fertilization times, r is the nitrogen addition rate, NtI.e. the amount of nitrogen applied at the t-th time at rate r, Nt-1Is the total nitrogen application including the t-1 th time.
(3) And (3) shading treatment is carried out for 40 percent at the same time of the first nitrogen fertilization treatment, and the shading treatment time is 6 months.
EXAMPLE six
A method for cultivating a phoebe nanmu seedling comprises the following steps:
(1) selecting 2-year-old seedlings of the Machilus thunbergii to transplant into culture pots in 3 months and 10 days, and filling 10kg of culture soil into the culture pots to ensure that seedlings are planted in one pot and a tray is arranged in the other pot; wherein the culture soil is sandy loam, pH is adjusted to 6.8, and the quick-acting potassium is 15.49 mg/kg-1Quick-acting phosphorus 2.28 mg/kg-1Quick-acting nitrogen 14.65 mg/kg-1。
(2) Performing first nitrogen fertilization treatment in 1 day after 4 months, wherein the nitrogen fertilization interval is 1 month after each time, and fertilizing for 6 times in total; wherein the total amount of nitrogen in 6 times is 1800mg per plant-1(ii) a The nitrogen fertilization adopts an index fertilization mode, and the index fertilization treatment is determined according to a Timmer formula, and the method specifically comprises the following steps:
NT＝NS(ert-1) (1)
Nt＝NS(ert-1)-Nt-1 (2)
in the formula: n is a radical ofTFor the total amount of nitrogen administered, NSThe initial nitrogen content of the phoebe nanmu seedling plants before the test, T is the current index fertilization times, T is the total fertilization times,r is the rate of nitrogen addition, NtI.e. the amount of nitrogen applied at the t-th time at rate r, Nt-1Is the total nitrogen application amount including the t-1 st time.
(3) And (3) shading treatment is carried out for 40 percent at the same time of the first nitrogen fertilization treatment, and the shading treatment time is 6 months.
EXAMPLE seven
A method for cultivating a phoebe nanmu seedling comprises the following steps:
(1) selecting 2-year-old seedlings of the Machilus thunbergii to transplant into culture pots in 3 months and 10 days, and filling 10kg of culture soil into the culture pots to ensure that seedlings are planted in one pot and a tray is arranged in the other pot; wherein the culture soil is sandy loam, pH is adjusted to 6.8, and the quick-acting potassium is 15.49 mg/kg-1Fast-acting phosphorus 2.28 mg/kg-1Quick-acting nitrogen 14.65 mg/kg-1。
(2) Performing first nitrogen fertilization treatment in 1 day after 4 months, wherein the nitrogen fertilization interval is 1 month after each time, and fertilizing for 6 times in total; wherein the total amount of nitrogen of 6 times is 1200mg per plant-1(ii) a The nitrogen fertilization adopts an index fertilization mode, and the index fertilization treatment is determined according to a Timmer formula, and the method specifically comprises the following steps:
NT＝NS(ert-1) (1)
Nt＝NS(ert-1)-Nt-1 (2)
in the formula: n is a radical of hydrogenTIs the total amount of nitrogen administered, NSThe initial nitrogen content of the Phoebe Photinia seedling plants before the test, T is the current index fertilization times, T is the total fertilization times, r is the nitrogen addition rate, NtI.e. the amount of nitrogen applied at the t-th time at rate r, Nt-1Is the total nitrogen application amount including the t-1 st time.
(3) And (3) shading treatment of 60% is carried out at the same time of the first nitrogen fertilization treatment, and the shading treatment time is 6 months.
Example eight
A method for cultivating a phoebe nanmu seedling comprises the following steps:
(1) selecting 2-year-old seedlings of the phoebe nannieri in 3 months and 10 days, transplanting the seedlings into a culture pot, and filling 10kg of culture soil into the culture pot to ensure that seedlings are planted in one pot and a tray is arranged in the other pot; wherein the culture soil is sandy soilSoil, pH6.8, quick-acting potassium 15.49 mg/kg-1Fast-acting phosphorus 2.28 mg/kg-1Quick-acting nitrogen 14.65 mg/kg-1。
(2) Performing first nitrogen fertilization treatment in 1 day after 4 months, wherein the nitrogen fertilization interval is 1 month after each time, and fertilizing for 6 times in total; wherein the total amount of nitrogen of 6 times is 1200mg per plant-1(ii) a The nitrogen fertilization adopts an index fertilization mode, and the index fertilization treatment is determined according to a Timmer formula, and the method specifically comprises the following steps:
NT＝NS(ert-1) (1)
Nt＝NS(ert-1)-Nt-1 (2)
in the formula: n is a radical ofTIs the total amount of nitrogen administered, NSThe initial nitrogen content of the Phoebe sheareri seedling plants before the test, T is the current index fertilization times, T is the total fertilization times, r is the nitrogen addition rate, NtI.e. the amount of nitrogen applied at the t-th time at rate r, Nt-1Is the total nitrogen application amount including the t-1 st time.
(3) And (3) shading treatment of 80% is carried out simultaneously with the first nitrogen fertilization treatment, and the shading treatment time is 6 months.
In order to verify the effectiveness of the method, 840 seedlings of 2-year-old machilus thunbergii are selected, the initial seedlings are high (24.18 +/-0.16) cm, the ground diameter is (3.28 +/-0.03) mm, the seedlings are randomly divided into 14 groups, namely each group is divided into 3 repeats, and each repeat is provided with 20 seedlings of 2-year-old machilus thunbergii. The test site is arranged at a nursery stock base (32 degrees 27 'N and 119 degrees 56' E) of a certain college. The land belongs to subtropical monsoon climate, is warm and humid, and has abundant rainwater. The average annual temperature is 15.3 ℃, the average annual accumulated temperature is 5365.6 ℃, the average annual rainy day is 113d, the average annual precipitation is 1055mm, the average annual sunshine time is 2205.9h, and the frost-free period is 215 d.
Description of the experiments
1. Planting 840 2-year-old Photinia fraseri seedlings in flowerpot with specification of 24cm × 23cm × 28cm (upper caliber × lower caliber × height) in 3 months and 10 days in 2018, and planting 1 plant and pot-1. Each pot contains 10kg of soil, and each flowerpot is provided with a plastic tray for preventing water and fertilizer loss. The pot soil is sandy loam with pH of 6.8 and quick-acting potassium of 15.49 mg/kg-1Fast-acting phosphorus 2.28 mg/kg-1Quick-acting nitrogen 14.65 mg/kg-1。
2. The fertilizer is a common rhodamine macroelement water-soluble compound fertilizer containing 20% of nitrogen N, 520% of P2O and 20% of K2O 20. Fertilizing by a water-soluble method, and applying 50mL of fertilizer to each seedling.
3. Shading treatment: different illumination intensities are simulated manually by a black shading net, and shading treatment is set to be 40-80%.
4. Initial nitrogen content N of Phoebe Photinia seedlingsS30.25 mg/strain-1。
5. Biomass harvest index ═ total biomass/total nitrogen dosed × 100%
6. The nitrogen harvest index (%) -, total nitrogen accumulation/total nitrogen application amount is multiplied by 100%
7. The quality index of the nursery stock is the total biomass of the nursery stock (g)/[ height of the nursery stock (cm)/diameter of the ground (mm) + stem biomass (g)/root biomass (g) ]
II, cultivating each group of nursery stocks as follows:
1. control group 1: the treatment was carried out according to the method of step (1) of example 1, but without applying fertilizer, without shading, with 50ml of water per day;
2. control group 2: the treatment was carried out by shading 40% with reference to the method of steps (1), (3) of example 1, but without applying fertilizer, applying 50ml of water per day;
3. control group 3: fertilization treatment was carried out by the method of steps (1) and (2) of example 1, but shading was not carried out;
4. control group 4: fertilizing treatment is carried out according to the methods of the steps (1) and (2) in the example 4, but shading is not carried out;
5. control group 5: fertilization treatment was carried out by the method of steps (1) and (2) with reference to example 5, but shading was not carried out;
6. control group 6: fertilization treatment was carried out by the method of steps (1) and (2) with reference to example 6, but shading was not carried out;
7. experimental group 1: the treatment was carried out in the manner referred to in example 1;
8. experimental group 2: the treatment was carried out in the manner as in example 2;
9. experimental group 3: the treatment was carried out in the manner described in example 3;
10. experimental group 4: the treatment was carried out in the manner described in example 4;
11. experimental group 5: the treatment was carried out in the same manner as in example 5;
12. experimental group 6: the treatment was carried out in the manner described in example 6;
13. experimental group 7: the treatment was carried out in the manner described in example 7;
14. experimental group 8: the treatment was carried out in the same manner as in example 8.
Thirdly, the fertilization treatment of each group is as the following table 1:
TABLE 1 administration of Nitrogen in mg-Strain for different treatments-1)
| Treatment of | 4 month and 1 day | 5 months and 1 day | 6 months and 1 day | 7 month and 1 day | 8 month and 1 day | 9 month and 1 day | Total up to |
| Control group 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Control group 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Control group 3 | 100 | 100 | 100 | 100 | 100 | 100 | 600 |
| Experimental group 1 | 100 | 100 | 100 | 100 | 100 | 100 | 600 |
| Experimental group 2 | 200 | 200 | 200 | 200 | 200 | 200 | 1200 |
| Experimental group 3 | 300 | 300 | 300 | 300 | 300 | 300 | 1800 |
| Control group 4 | 19.93 | 33.06 | 54.84 | 90.96 | 150.9 | 250.31 | 600 |
| Experimental group 4 | 19.93 | 33.06 | 54.84 | 90.96 | 150.9 | 250.31 | 600 |
| Control group 5 | 25.85 | 47.93 | 88.88 | 164.83 | 305.67 | 566.84 | 1200 |
| Experimental group 5 | 25.85 | 47.93 | 88.88 | 164.83 | 305.67 | 566.84 | 1200 |
| Control group 6 | 29.69 | 58.82 | 116.54 | 230.91 | 457.52 | 906.52 | 1800 |
| Experimental group 6 | 29.69 | 58.82 | 116.54 | 230.91 | 457.52 | 906.52 | 1800 |
| Experimental group 7 | 25.85 | 47.93 | 88.88 | 164.83 | 305.67 | 566.84 | 1200 |
| Experimental group 8 | 25.85 | 47.93 | 88.88 | 164.83 | 305.67 | 566.84 | 1200 |
Fourth, the experimental effect
(1) Influence of different treatments on growth indexes of Phoebe Photinia seedlings
As can be seen from table 2, the fertilization promoted the growth of the phoebe nanmu seedlings, the progressive fertilization (i.e., the index fertilization) was superior to the conventional fertilization (the uniform fertilization), and the progressive fertilization with the appropriate concentration (1200 mg. plant)-1) Can obviously promote the growth of the height and the ground diameter of the seedling of the photinia serrulata, but the nitrogen application amount is too large (1800 mg. plant)-1) It has effect in inhibiting growth of height and ground diameter of seedling.
The height and the ground diameter of the seedlings in the control group 1 are higher than those in the control group 2, which shows that the growth of the photinia fraseri seedlings can be inhibited instead of applying fertilizer and only shading treatment.
The height and the ground diameter of the seedlings in the control group 3 are obviously higher than those in the control group 1, which shows that the fertilization can obviously promote the growth of the seedlings. The height and the diameter of the seedlings in the experimental group 2 are higher than those in the experimental groups 1 and 3, the height and the diameter of the seedlings in the experimental group 5 are higher than those in the experimental groups 4 and 6, and the total fertilization amount is 1200mg per plant-1The effect of (A) is better than others, and is the optimal total fertilization amount.
The height and the ground diameter of the seedlings in the control group 3 are higher than those in the experimental group 1, which shows that when the uniform fertilization and the shading treatment of 40 percent are carried out, the shading treatment can inhibit the growth of the seedlings. However, the height and diameter of the seedlings in the control group 4 were lower than those in the experimental group 4, the height and diameter of the seedlings in the control group 5 were lower than those in the experimental group 5, and the height and diameter of the seedlings in the control group 6 were lower than those in the experimental group 6, and it was concluded that the index fertilization plus 40% shading treatment did not inhibit the growth of the seedlings, but rather had a promoting effect.
The height and the ground diameter of the seedlings in the experimental group 5 were higher than those in the experimental groups 7 and 8, and it was found that the optimum shading treatment was 40%.
To sum up, under the condition of progressive fertilization, the shady area is shaded to promote the growth of the phoebe nanmu seedlings. Progressive fertilization + shading (1200 mg. plant)-1+ 40% shading) the height and ground diameter of the seedlings were significantly higher than the other treatments.
TABLE 2 influence of different treatments on Phoebe Photinia seedling growth index
| Treatment of | Height/cm of seedling | Ground diameter/mm |
| Control group 1 | 49.88 | 4.48 |
| Control group 2 | 46.32 | 4.25 |
| Control group 3 | 59.74 | 5.79 |
| Experimental group 1 | 58.15 | 5.48 |
| Experimental group 2 | 62.75 | 6.22 |
| Experimental group 3 | 60.91 | 6.01 |
| Control group 4 | 60.9 | 6.01 |
| Experimental group 4 | 61.36 | 6.12 |
| Control group 5 | 68.77 | 6.38 |
| Experimental group 5 | 74.65 | 7.04 |
| Control group 6 | 61.43 | 6.20 |
| Experimental group 6 | 64.54 | 6.37 |
| Experimental group 7 | 60.34 | 6.11 |
| Experimental group 8 | 58.27 | 5.84 |
(2) Influence of nitrogen absorption and utilization of different treated phoebe nanmu seedlings
As can be seen from tables 3 and 4, the biomass harvest index, the nitrogen harvest index and the seedling quality index of uniform fertilization were all inferior to those of progressive fertilization. Along with the increase of the fertilizing amount, the biomass harvest index and the nitrogen harvest index are in a descending trend, and the quality index of the nursery stock is firstly increased and then decreased. The interaction between fertilization and shading is inconsistent, and the fertilization and shading are carried out progressively (1200mg per plant)-1+ 40% shaded) treatment nitrogen harvest index 173.02%, significantly higher than other treatments.
The whole plant biomass and the seedling quality index of the control group 1 are superior to those of the control group 2, which shows that the growth of the photinia fraseri seedlings and the accumulation of nutrients can be inhibited instead of applying fertilizer and only performing shading treatment.
The whole plant biomass and the quality index of the nursery stock of the control group 3 are obviously higher than those of the control group 1, which shows that the fertilization can obviously promote the growth of the nursery stock. The biomass harvest index, the nitrogen harvest index and the seedling quality index of the control group 3 are higher than those of the experimental group 1, which indicates that when uniform fertilization is carried out and shading treatment is carried out by 40%, the shading treatment can inhibit the growth of seedlings; the biomass of the whole plant of the control group 4 is higher than that of the experimental group 4, the biomass of the whole plant of the control group 6 is higher than that of the experimental group 6, but the biomass of the whole plant of the control group 5 is lower than that of the experimental group 5; meanwhile, the biomass harvest index, the nitrogen harvest index and the seedling quality index of the experimental group 5 are all higher than those of the control group 5, so that the index fertilization (1200 mg. plant) can be deduced-1) When the treatment is carried out in the shading treatment of + 40%, the shading treatment can not inhibit the absorption and accumulation of nutrients of the seedlings, but also has the promotion effect.
The comprehensive analysis shows that the fertilizer is applied and the shade is shaded (1200 mg. plant)-1And + 40% shading) treatment can be beneficial to improving the seedling quality index of the photinia fraseri seedlings, saving fertilizer and improving the utilization efficiency of nitrogen.
TABLE 3 influence of different treatments on nitrogen absorption and utilization of Photinia serrulata
TABLE 4 influence of different treatments on the quality index of Phoebe Photinia seedling
| Treatment of | Root/(g.plant)-1) | Stem/(g.plant)-1) | Leaf/(g.plant)-1) | Whole plant biomass/(g.plant)-1) | Quality index of nursery stock |
| Control group 1 | 9.84 | 4.62 | 8.48 | 22.94 | 1.98 |
| Control group 2 | 9.23 | 4.24 | 8.15 | 21.62 | 1.90 |
| Control group 3 | 10.55 | 13.82 | 15.37 | 39.74 | 3.42 |
| Experimental group 1 | 10.25 | 13.17 | 14.95 | 38.37 | 3.23 |
| Experimental group 2 | 11.27 | 14.96 | 18.73 | 44.96 | 3.97 |
| Experimental group 3 | 12.29 | 15.84 | 19.02 | 47.15 | 4.14 |
| Control group 4 | 14.14 | 16.94 | 19.05 | 50.13 | 4.42 |
| Experimental group 4 | 13.97 | 16.85 | 19.23 | 50.05 | 4.46 |
| Control group 5 | 17.14 | 25.21 | 29.12 | 71.47 | 5.83 |
| Experimental group 5 | 18.86 | 26.68 | 30.71 | 76.25 | 6.34 |
| Control group 6 | 15.92 | 22.67 | 26.99 | 65.58 | 5.79 |
| Experimental group 6 | 15.83 | 22.49 | 26.91 | 65.23 | 5.65 |
| Experimental group 7 | 13.38 | 19.23 | 24.31 | 56.92 | 5.03 |
| Experimental group 8 | 11.27 | 16.24 | 20.36 | 47.87 | 4.19 |
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, i.e., all equivalent changes and modifications made in the specification should be considered as being covered by the present invention.
Claims (8)
1. A method for cultivating Phoebe sheareri seedlings is characterized by comprising the following steps:
(1) selecting 2-year-old seedlings of the phoebe nannieri in 3 months per year, transplanting the seedlings into a culture pot, and filling 10kg of culture soil into the culture pot to ensure that one pot of seedlings is matched with one tray;
(2) after 20-40 days of transplantation, carrying out first nitrogen fertilization treatment, and then fertilizing 6 times at a nitrogen fertilization interval of 30-40 days; wherein the total nitrogen content of 6 times is 600-1800mg strain-1。
2. The method for cultivating a seedling of photinia fraseri according to claim 1, wherein in step (1), the cultivation soil is sandy loam; .
3. The method for cultivating the phoebe nanmu seedlings according to claim 2, wherein in the step (1), the pH of the sandy soil is adjusted to 6.8, and the quick-acting potassium is 15.49 mg/kg-1Quick-acting phosphorus 2.28 mg/kg-1Quick-acting nitrogen 14.65 mg/kg-1。
4. The method for cultivating the phoebe nanmu seedlings according to claim 1, wherein in the step (2), the nitrogen fertilization is performed in an index fertilization mode, and the index fertilization processing is determined by referring to a Timmer formula.
5. The cultivation method of Phoebe Nursery stock as claimed in claim 4, wherein the total amount of nitrogen in step (2) for 6 times is 1200mg per plant-1。
6. The method for cultivating the phoebe nanmu seedlings according to claim 1, further comprising the step (3) of shading the seedlings from the first nitrogen fertilization simultaneously, wherein the shading time is 5 to 7 months.
7. The method for cultivating Phoebe sheareri seedlings according to claim 6, wherein the shading treatment in the step (3) is 40% to 80%.
8. The method for cultivating a phoebe nanmu seedling of claim 7, wherein the shady treatment in the step (3) is 40%.
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| CN107047206A (en) * | 2017-05-15 | 2017-08-18 | 广西大学 | A kind of breeding method of high-quality sterculia nobilis nursery stock |
| CN108719304A (en) * | 2018-05-21 | 2018-11-02 | 江苏农牧科技职业学院 | A kind of growth regulator and nurturing staff method of purple nanmu nurturing staff |
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