CN112243629A - Sustainable method for arid region farmland salt irrigation based on crop rotation halophyte - Google Patents
Sustainable method for arid region farmland salt irrigation based on crop rotation halophyte Download PDFInfo
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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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
- A01G20/00—Cultivation of turf, lawn or the like; Apparatus or methods therefor
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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
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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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
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/20—Cereals
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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
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/50—Cotton
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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
- A01G25/00—Watering gardens, fields, sports grounds or the like
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- 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
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Abstract
The invention relates to a sustainable method for saline irrigation of arid region farmlands based on crop rotation halophytes, which comprises the steps of selecting a sandy farmland in south Xinjiang, paving and burying a dark pipe, horizontally conveying soil, and vertically sprinkling salt; combining deep scarification with fertilization and soil preparation to dredge the vertical water flow of the soil, and removing the salt in the drip irrigation salt accumulation area to flow to a hidden pipe; fresh water is sowed out in a dry and wet mode, drip irrigation is carried out for 2 times in the seedling stage, the runoff of flood water is introduced into a drip irrigation system from the bottom of 4 months to the beginning of 6 months, and flood runoff is introduced into a drip irrigation system from the middle ten days of 6 months to 8 months, and winter irrigation is carried out in the fallow period of the rich season every 3 years, so that a water-saving irrigation system suitable for the local is formed; after 2 years of crops are planted, 1 year of halophyte is crop-rotated to form a crop rotation system taking classified halophytes with the functions of salt transfer and soil fertility as the core; constructing a furrow-ridge micro-topography to play the function of halophyte and applying water-soluble acid fertilizer by a Venturi fertilizer applicator in a dripping mode to ensure farmland production and soil desalination; not only can supplement life-saving water in the key period to deal with drought, yield reduction and failure in production, but also can open up the water and salt transportation way of farmland soil, ensure agricultural production, and provide a technical example for relieving seasonal water shortage, reasonably developing saline water and maintaining soil quality.
Description
Technical Field
The invention provides a sustainable method for saline irrigation of arid regions based on crop rotation halophyte, and relates to a planting method for guaranteeing soil quality by utilizing agronomic engineering, halophyte and crop rotation system to solve saline irrigation of arid regions.
Background
The regional agricultural production, the economic development and the social stability are restricted by the shortage of fresh water resources in southern Xinjiang and the irreconciliable water-rich period and the water-using period for field irrigation. Although the water storage amount of the reservoir in 8-10 months at the end of the flood season can play a certain role in allocation, the reservoir can only maintain the sowing period (4 months early), no water is available in 4-6 months, the agriculture is subjected to severe seasonal drought every year, and particularly in various rivers and downstream, river water flow is cut off, continuous arid years, the agriculture is dead, the land is abandoned, and a large number of farmers take place in different places.
However, the areas have abundant shallow groundwater with the mineralization degree of 3-10g/L or agricultural drainage water for utilization, the saline water irrigation has two characteristics, the salinity is brought while the water content is increased, the potential salinization crisis exists in the soil, and the crop growth activity is further influenced. In order to relieve the shortage of fresh water resources and develop saline water resources, how to control soil salinity, maintain soil quality and continuously carry out agricultural production is a problem which needs to be solved urgently by agricultural science and technology personnel in arid regions.
Aiming at the problems which exist for a long time and are not solved, the group exerts the halophyte halophilic and soil improvement functions by combining with a local planting and irrigation system after years of practice, summarizes sustainable key technologies of arid region farmland saline irrigation based on crop rotation halophytes, and provides technical paradigms for relieving seasonal water shortage, reasonably developing saline water and maintaining soil quality.
Disclosure of Invention
The invention aims to provide a sustainable method for saline irrigation of arid regions of farmlands based on crop rotation halophytes, which selects sandy soil farmlands in south Xinjiang and gets through radial flow of soil water by paving and burying hidden pipes and preparing soil deeply and loosely; fresh water in the seedling stage, salt water in 5-6 months and flood runoff in-8 months in the middle ten days of 6 months are introduced into a drip irrigation system, and winter irrigation is carried out every 3 years to form a water-saving irrigation system suitable for the local; after 2 years of salt-tolerant crops, 1 year of halophyte is planted in turn to form a planting system taking the halophyte as circulation; the acid fertilizer is dripped and applied by a ditch and ridge structure and a Venturi fertilizer applicator to ensure the yield and the soil desalination; the measures are circulated, the shortage of fresh water is relieved by using the saline water, and the agricultural production and the soil quality maintenance are ensured.
The invention relates to a sustainable method for farmland salt irrigation in arid regions based on crop rotation halophyte, which comprises the following steps:
selecting land parcels:
a. selecting sandy soil farmlands along the alkali discharge channel in the autumn fallow period;
laying a hidden calandria:
b. firstly, punching 60/m holes with the aperture of 5mm on the upper surface of a PVC pipe, then wrapping 1 layer of geotextile outside the punched PVC pipe, taking the geotextile and a gravel layer as an outer wrapping filter layer, and installing a ball valve at a water outlet of the PVC pipe;
c. ditching is carried out on the vertical alkali discharge channel, the distance is 25-30m, the depth of the ditch is 2m, gravels with the grain size of 1-2cm are filled up from bottom to top after ditching, the PVC pipes in the step b with the diameter of 125mm are laid on the gravels, the punching surfaces face upwards, then the gravels with the depth of 15cm are covered on the PVC pipes, water permeable geotextile is covered, original soil is backfilled, the PVC pipes are inclined towards the alkali discharge channel and are reduced by 1/600-700, after drainage concealed pipes are laid, the land is leveled, after 80cm of deep scarification, 1000kg of thoroughly decomposed animal manure, 1000kg of kitchen residue and 30kg of compound fertilizer are spread per mu, then deep turning is carried out by 40cm, and harrowing and preparing seeds are carried out;
and (3) planting cotton in saline water in the drought key period:
d. in the beginning of 4 months, cotton seeds are coated to prevent continuous cropping, drip irrigation is carried out under the film, dry sowing and wet planting are carried out, the first irrigation is thoroughly carried out, fresh water is dripped for 1 time 7d after seedling emergence, and the irrigation quantity is 15-20m3Per mu; 5-6 months before the flood season, drip irrigation for 1 time and 5 times for 5 times with the salinity of less than 6g/L in 7 days and the irrigation amount of 15-20m3Each mu is counted; then until 8 months later, drip irrigation the runoff fresh water in the flood season again;
and (3) rotation of halophytes:
e. d, planting cotton for 2 years, then, taking the cotton as halophyte in the 3 rd annual ring, and preparing soil according to the step c; then ditching and ridging are carried out, ditching is carried out at the interval of 1.6m, the ditch width is 2.0m, the ditch depth is 0.4m, and earthwork raised in the ditch is stacked in the area between adjacent ditches to form a ridge;
planting halophytes:
f. d, paving two drip irrigation belts on the ridge formed in the step e by adopting double pipes and four rows at a distance of 80cm, then laminating, pressing soil at intervals of 1m to prevent wind, respectively dibbling a feed sorghum and a sweet clover at a dibbling device distance of 20cm from the drip irrigation belts, wherein the row distance is 40cm, the hole distance is 12cm, seeds are put into each hole by 3-5 seeds, the sowing depth is 1-2cm, and 3 seedlings are left in each hole during the final singling; then, a drip irrigation tape is paved in the ditch, and mixed wet sand and suaeda salsa seeds with the volume ratio of 1:1 are sown along the drip irrigation tape;
irrigation, fertilization and harvest:
g. irrigating according to the method of the step d; applying water-soluble acid fertilizer for 2 times by a Venturi fertilizer applicator in the vegetative growth period, wherein the interval between every two times is 15 days; and (3) harvesting: in the flowering period of 9 months, leaving 30cm of high-stubble mowing, and preparing the harvested feed from sorghum, sweet clover and suaeda salsa into mixed silage rich in plant salt;
establishing a crop rotation and irrigation system:
h. step g, in the period of rest work, spreading 15 kilograms of urea per mu, turning over and pressing the high stubble, and flooding irrigation canal water for 200m3Per mu, washing salt and retting to increase soil organic matters; and (5) continuing to plant cotton in the next year, and circulating the steps c, d, e, f and g to form a crop rotation planting system and an irrigation system of 2 years of crops and 1 year of halophytes under saline water irrigation.
The invention relates to a sustainable method for saline irrigation of arid regions based on crop rotation halophytes, which is characterized by comprising the following steps:
the invention integrates hydraulic engineering, biological and agricultural measures to solve the sustainable problem of soil quality maintenance of saline irrigation farmlands in arid regions. Taking a hidden calandria as a base, matching with deep scarification and soil preparation, and getting through a soil salt excretion way; according to the characteristics of the fresh water source cycle and the planting season in southern Xinjiang, the irrigation water quality is reasonably arranged in different growth periods, so that the seasonal shortage of fresh water is relieved, and the aim of 'life saving water' drought resistance and harvest preservation is fulfilled; combining with the structure of furrows and ridges, taking biological measures of classifying salt plants to absorb salt and cultivate fertilizer as soil improvement, and cutting and manufacturing plant salt silage, thereby solving the problem of serious shortage of forage grass in southern Xinjiang; creates a planting and irrigation system taking functional halophytes as the core in the key water shortage period of the arid region, and has important application value for relieving the shortage of fresh water, ensuring agricultural production by using salt water and maintaining the sustainable development of oasis farmlands in southern Xinjiang.
Detailed Description
Example 1
In 2018 and 2020, the invention performs a farmland saline water irrigation test in 31 teams of second soldiers in Xinjiang production and construction groups:
selecting land parcels:
a. selecting sandy soil farmlands along the alkali discharge channel in the autumn fallow period;
laying a hidden calandria:
b. firstly, punching 60/m holes with the aperture of 5mm on the upper surface of a PVC pipe, then wrapping 1 layer of geotextile outside the punched PVC pipe, taking the geotextile and a gravel layer as an outer wrapping filter layer, and installing a ball valve at a water outlet of the PVC pipe;
c. ditching is carried out on the vertical alkali discharge channel, the distance is 25m, the depth of the ditch is 2m, gravels with the grain diameter of 15cm and the grain diameter of 1cm are filled from bottom to top after ditching, PVC pipes with the diameter of 125mm in the step b are laid on the gravels, the punching surfaces face upwards, then the gravels with the depth of 15cm are covered on the PVC pipes, permeable geotextile is covered, raw soil is backfilled, the PVC pipes incline to the alkali discharge channel, the specific value is reduced by 1/600-700 (namely the ratio of the height difference of the head end and the tail end of the PVC pipes to the horizontal length of the PVC pipes), after the drainage concealed pipes are laid, the land is leveled, after 80cm deep loosening, 1000kg of decomposed animal manure, 1000kg of kitchen residue and 30kg of biogas residue are broadcast per mu, then 40cm deep turning is carried out, and rak;
and (3) planting cotton in saline water in the drought key period:
d. in the beginning of 4 months, cotton seeds are coated to prevent continuous cropping, drip irrigation is carried out under the film, dry sowing and wet planting are carried out, the first irrigation is thoroughly carried out, fresh water is dripped for 1 time 7d after seedling emergence, and the irrigation quantity is 15m3Per mu; 5-6 months before the flood season, drip irrigation for 1 time and 5 times for 5 times with the salinity of less than 6g/L in 7 days and the irrigation amount of 15m3Each mu is counted; then until 8 months later, drip irrigation the runoff fresh water in the flood season again;
and (3) rotation of halophytes:
e. d, planting cotton for 2 years, then, taking the cotton as halophyte in the 3 rd annual ring, and preparing soil according to the step c; then ditching and ridging are carried out, ditching is carried out at the interval of 1.6m, the ditch width is 2.0m, the ditch depth is 0.4m, and earthwork raised in the ditch is stacked in the area between adjacent ditches to form a ridge;
planting halophytes:
f. d, paving two drip irrigation belts on the ridge formed in the step e by adopting double pipes and four rows at a distance of 80cm, then laminating, pressing soil at intervals of 1m to prevent wind, respectively dibbling a feed sorghum and sweet clover at a distance of 20cm from the drip irrigation belts by using a dibbler, wherein the row spacing is 40cm, the hole spacing is 12cm, 3 seeds are put into each hole, the sowing depth is 1cm, and 3 seedlings are left in each hole during the final singling; then, a drip irrigation tape is paved in the ditch, and mixed wet sand and suaeda salsa seeds with the volume ratio of 1:1 are sown along the drip irrigation tape;
irrigation, fertilization and harvest:
g. irrigating according to the method of the step d; applying water-soluble acid fertilizer for 2 times by a Venturi fertilizer applicator in the vegetative growth period, wherein the interval between every two times is 15 days; and (3) harvesting: in the flowering period of 9 months, leaving 30cm of high-stubble mowing, and preparing the harvested feed from sorghum, sweet clover and suaeda salsa into mixed silage rich in plant salt;
establishing a crop rotation and irrigation system:
h. step g, in the period of rest work, spreading 15 kilograms of urea per mu, turning over and pressing the high stubble, and flooding irrigation canal water for 200m3Per mu, washing salt and retting to increase soil organic matters; continuing to plant cotton in the next year, and forming a crop rotation planting system and an irrigation system of 2 years crops and 1 year halophytes under saline water irrigation by circulating the steps c, d, e, f and g。
Example 2
In 2018 and 2020, the invention performs a farmland saline water irrigation test in 33 groups of second soldiers in Xinjiang production and construction groups:
selecting land parcels:
a. selecting sandy soil farmlands along the alkali discharge channel in the autumn fallow period;
laying a hidden calandria:
b. firstly, punching 60/m holes with the aperture of 5mm on the upper surface of a PVC pipe, then wrapping 1 layer of geotextile outside the punched PVC pipe, taking the geotextile and a gravel layer as an outer wrapping filter layer, and installing a ball valve at a water outlet of the PVC pipe;
c. ditching is carried out on the vertical alkali discharge channel, the distance is 30m, the depth of the ditch is 2m, gravels with the particle size of 15cm and the particle size of 2cm are filled from bottom to top after ditching, PVC pipes with the diameter of 125mm in the step b are laid on the gravels, the punching surfaces face upwards, then the 15cm deep gravels are covered on the PVC pipes, permeable geotextile is covered, raw soil is backfilled, the PVC pipes are inclined towards the alkali discharge channel, the ratio is reduced by 1/600-700 (the ratio of the height difference of the head end and the tail end of the PVC pipes to the horizontal length of the PVC pipes), after the drainage concealed pipes are laid, the land is leveled, after 80cm deep loosening, 1000kg of thoroughly decomposed animal manure, 1000kg of kitchen residue and 30kg of biogas residue are spread per mu, then 40cm deep turning is carried out, and raking is carried;
and (3) planting cotton in saline water in the drought key period:
d. in the beginning of 4 months, cotton seeds are coated to prevent continuous cropping, drip irrigation is carried out under the film, dry sowing and wet planting are carried out, the first irrigation is thoroughly carried out, fresh water is dripped for 1 time 7 days after seedling emergence, and the irrigation quantity is 20m3Per mu; 5-6 months before the flood season, drip irrigation for 1 time and 5 times for 5 times with the salinity of less than 6g/L in 7 days and the irrigation quantity of 20m3Each mu is counted; then until 8 months later, drip irrigation the runoff fresh water in the flood season again;
and (3) rotation of halophytes:
e. d, planting cotton for 2 years, then, taking the cotton as halophyte in the 3 rd annual ring, and preparing soil according to the step c; then ditching and ridging are carried out, ditching is carried out at the interval of 1.6m, the ditch width is 2.0m, the ditch depth is 0.4m, and earthwork raised in the ditch is stacked in the area between adjacent ditches to form a ridge;
planting halophytes:
f. d, paving two drip irrigation belts on the ridge formed in the step e by adopting double pipes and four rows at a distance of 80cm, then laminating, pressing soil at intervals of 1m to prevent wind, respectively dibbling a feed sorghum and sweet clover at a dibbling device distance of 20cm from the drip irrigation belts, wherein the row spacing is 40cm, the hole spacing is 12cm, 5 seeds are put into each hole, the sowing depth is 2cm, and 3 seedlings are left in each hole during the final singling; then, a drip irrigation tape is paved in the ditch, and mixed wet sand and suaeda salsa seeds with the volume ratio of 1:1 are sown along the drip irrigation tape;
irrigation, fertilization and harvest:
g. irrigating according to the method of the step d; applying water-soluble acid fertilizer for 2 times by a Venturi fertilizer applicator in the vegetative growth period, wherein the interval between every two times is 15 days; and (3) harvesting: in the flowering period of 9 months, leaving 30cm of high-stubble mowing, and preparing the harvested feed from sorghum, sweet clover and suaeda salsa into mixed silage rich in plant salt;
establishing a crop rotation and irrigation system:
h. step g, in the period of rest work, spreading 15 kilograms of urea per mu, turning over and pressing the high stubble, and flooding irrigation canal water for 200m3Per mu, washing salt and retting to increase soil organic matters; and (5) continuing to plant cotton in the next year, and circulating the steps c, d, e, f and g to form a crop rotation planting system and an irrigation system of 2 years of crops and 1 year of halophytes under saline water irrigation.
The invention relates to a sustainable method for saline irrigation of arid regions of farmlands based on crop rotation halophytes, which is characterized in that 31 groups and 33 groups of second soldiers in the military sector production and construction in Xinjiang are respectively subjected to a farmland saline water planting test, and the test shows that under the crop rotation and irrigation system, cotton seedlings grow at a low speed in a saline water irrigation period of 5-6 months, compensatory growth is recovered after runoff fresh water drip irrigation for 6-7 months, and the yield of cotton irrigated with 1-6g/L of saline water seasonally is not reduced within 2 years; compared with the traditional irrigation method, the irrigation quantity of the invention saves water by more than 50 percent; suaeda salsa grows vigorously, the dry weight per mu is more than 3000 kg, the salt transfer amount is 600-900 kg/mu, and the silage prepared from the suaeda salsa mixed with sorghum and sweet clover per mu is 11000 kg/mu; due to the salt transfer of the halophyte and the effects of deep scarification and underground pipe drainage engineering, the salt content of the plough layer is reduced by 40 percent compared with that before the irrigation of the saline water, the organic matters and the effective nutrients are improved, the salt accumulation is avoided, the drip irrigation salt accumulation area with the depth of 40-80cm is broken, and the soil desalination is accelerated.
Claims (1)
1. A sustainable method for farmland salt irrigation in arid regions based on rotation of halophytes is characterized by comprising the following steps:
selecting land parcels:
a. selecting sandy soil farmlands along the alkali discharge channel in the autumn fallow period;
laying a hidden calandria:
b. firstly, punching 60/m holes with the aperture of 5mm on the upper surface of a PVC pipe, then wrapping 1 layer of geotextile outside the punched PVC pipe, taking the geotextile and a gravel layer as an outer wrapping filter layer, and installing a ball valve at a water outlet of the PVC pipe;
c. ditching is carried out on the vertical alkali discharge channel, the distance is 25-30m, the depth of the ditch is 2m, gravels with the grain size of 1-2cm are filled up from bottom to top after ditching, the PVC pipes in the step b with the diameter of 125mm are laid on the gravels, the punching surfaces face upwards, then the gravels with the depth of 15cm are covered on the PVC pipes, water permeable geotextile is covered, original soil is backfilled, the PVC pipes are inclined towards the alkali discharge channel and are reduced by 1/600-700, after drainage concealed pipes are laid, the land is leveled, after 80cm of deep scarification, 1000kg of thoroughly decomposed animal manure, 1000kg of kitchen residue and 30kg of compound fertilizer are spread per mu, then deep turning is carried out by 40cm, and harrowing and preparing seeds are carried out;
and (3) planting cotton in saline water in the drought key period:
d. in the beginning of 4 months, cotton seeds are coated to prevent continuous cropping, drip irrigation is carried out under the film, dry sowing and wet planting are carried out, the first irrigation is thoroughly carried out, fresh water is dripped for 1 time 7d after seedling emergence, and the irrigation quantity is 15-20m3Per mu; 5-6 months before the flood season, drip irrigation for 1 time and 5 times for 5 times with the salinity of less than 6g/L in 7 days and the irrigation amount of 15-20m3Each mu is counted; then until 8 months later, drip irrigation the runoff fresh water in the flood season again;
and (3) rotation of halophytes:
e. d, planting cotton for 2 years, then, taking the cotton as halophyte in the 3 rd annual ring, and preparing soil according to the step c; then ditching and ridging are carried out, ditching is carried out at the interval of 1.6m, the ditch width is 2.0m, the ditch depth is 0.4m, and earthwork raised in the ditch is stacked in the area between adjacent ditches to form a ridge;
planting halophytes:
f. d, paving two drip irrigation belts on the ridge formed in the step e by adopting double pipes and four rows at a distance of 80cm, then laminating, pressing soil at intervals of 1m to prevent wind, respectively dibbling a feed sorghum and a sweet clover at a dibbling device distance of 20cm from the drip irrigation belts, wherein the row distance is 40cm, the hole distance is 12cm, seeds are put into each hole by 3-5 seeds, the sowing depth is 1-2cm, and 3 seedlings are left in each hole during the final singling; then, a drip irrigation tape is paved in the ditch, and uniformly mixed wet sand and suaeda salsa seeds with the volume ratio of 1:1 are sown along the drip irrigation tape;
irrigation, fertilization and harvest:
g. irrigating according to the method of the step d; applying water-soluble acid fertilizer for 2 times by a Venturi fertilizer applicator in the vegetative growth period, wherein the interval between every two times is 15 days; and (3) harvesting: in the flowering period of 9 months, leaving 30cm of high-stubble mowing, and preparing the harvested feed from sorghum, sweet clover and suaeda salsa into mixed silage rich in plant salt;
establishing a crop rotation and irrigation system:
h. step g, in the period of rest work, spreading 15 kilograms of urea per mu, turning over and pressing the high stubble, and flooding irrigation canal water for 200m3Per mu, washing salt and retting to increase soil organic matters; and (5) continuing to plant cotton in the next year, and circulating the steps c, d, e, f and g to form a crop rotation planting system and an irrigation system of 2 years of crops and 1 year of halophytes under saline water irrigation.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114793521A (en) * | 2022-01-21 | 2022-07-29 | 慈溪市杭州湾现代农业研究院 | Comprehensive improvement method for facility soil |
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