CN103069947B - Acidified soil improvement method for rubber plantation - Google Patents
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Abstract
The invention discloses an acidified soil improvement method for a rubber plantation. The method comprises the following steps of: 1, selecting sowing time and green manure variety; 2, planting green manure, i.e., A, performing seed dressing by using symbiotic matching root nodule bacteria and phosphorus fertilizer before plantation of leguminous green manure; and 3, harvesting and burying the green manure, i.e., burying the harvested green manure in a dressing furrow and performing combined application of lime as a corrosion promoter in a burying process. The method aims at serious acidification of soil of the rubber plantation; meanwhile, no systematic control technology system is available at present; and the leguminous green manure with higher acid resistance and shading resistance isselected and used and application of microbial manure, DCD (dicyandiamide), the lime and the like is combined according to farm operation time process such as rubber plantation soil fertilization andwinter management, so that the pH (Potential of Hydrogen) of the soil and contents of soil organic matter and the like of the rubber plantation are improved, thereby improving the acidified soil of the rubber plantation.
Description
Technical field
The present invention relates to the agricultural science and technology technical field, especially relate to a kind of rubber plantation conditioner for acidified soil method.
Background technology
Soil acidification is the special performance of soil degradation.The soil peracid, can obviously influence the activity of microorganism in the soil, organic synthetic and decomposition, conversion and release, the validity of trace element and the ability of soil conservation nutrient etc. of nutritive element, thereby influence growth (Jiang Zepu etc., 2003 of ecological environment of soil quality and crop; Lee east morning etc., 2009; Fan Qingfeng, 2009).
Para rubber tree is the perennial woody economic crops that originate in the torrid zone, and growth cycle reaches 30-40, and ordinary rubber forest belt line-spacing is 6m, and spacing in the rows is 3m, the strongly fragrant density 70-80% in the rubber plantation of growing into forest.Hevea is in the happiness acid soil plant, and the soil acidity or alkalinity that is suitable for growing is pH4.5-5.5, so less to the concern of plantation soil acidification problem for a long time.But we studies show that, with comparing the eighties in 20th century, Hainan Province's plantation soil pH drops to 3.92～6.12 from 4.20～7.30, and fall is 6.67%～16.16%.Simultaneously, the coefficient of variation of planting plantation soil pH behind the glue reduces, and the reduction amplitude is 13.59%～81.03%, and planting soil pH behind the glue has towards balanced, the trend (He Peng etc., 2008) that develops of acidifying direction comprehensively.Therefore, the control of plantation soil acidification is imperative.
Contain a large amount of alkaline matters in some plants, its stalk etc. can be used as the acid soil improvement material, and common alkaline green manure has infertile field radish, cowpea, Chinese milk vetch, cutleaf coneflower, broad bean, eryuelan, rape, hairy vetch, rice grass etc.For example, the pH (Mao Jia etc., 2009) that Chinese milk vetch, leaf of locust, pea stalk etc. have improved tea garden soil in addition, leguminous plant has biological nitrogen fixation, the intercropping legume has reduced the input of fertilizer nitrogen, drops into the soil acidification problem that causes thereby also reduced fertilizer nitrogen.In addition, chemical amelioration such as liming, dolomite dust agent also can improve soil pH.
The Prevention Technique of rubber plantation soil acidification can be from the sylvan life intercropping, apply fertilizer and use aspects such as soil conditioner and start with.But for a long time specially at the interrow crop kind of plantation soil acidification, apply fertilizer and to use the research of Prevention Technique aspects such as soil conditioner less.
List of references:
Jiang Zepu, Wei Guang sprinkles, and covers scorching one-tenth, etc. Guangxi red soil orchard soil acidifying and study on regulation [J]. southwestern agriculture journal, 2003 (4): 90～94.
Lee is east early, Wang Yihua, Li Lingyun. Jiaodong Peninsula orchard soil acidifying situation and control technique [J]. and phosphate fertilizer and multiple fertilizer, 2009,24 (6): 80～81.
Fan Qingfeng. protection ground soil acidity feature and acidifying mechanism research [D]. the doctorate paper .2009 of Agricultural University Of Shenyang.
He Peng, Wu Min, Wei Jia is few. the spatial and temporal variation characteristic research [J] of Hainan Province's plantation Soil Fertility Quality index. Chinese agronomy circular, 2008,24 (10): 310～316.
Hair is good, Xu Ren button, Li Xinghui. and nitrogen form transforms the influence to leguminous plant material improvement tea garden soil acidity. ecology and rural environment journal 2009,25 (4): 42-45,99.
Summary of the invention
The objective of the invention is to design a kind of novel rubber plantation conditioner for acidified soil method, address the above problem.
To achieve these goals, the technical solution used in the present invention is as follows:
A kind of rubber plantation conditioner for acidified soil method comprises that step is as follows:
The first step, sowing time and green manure breed selection:
A becomes plantation shade rate height in age, if at the beginning of selecting the autumn, spring or summer sow, described green manure selects that shade tolerance is strong, the wide green manure kind of pH optimum range;
B becomes the plantation in age, if select late autumn or winter to sow green manure since vegetative period in the winter time, become plantation fallen leaves in winter in age, can also select the low green manure kind of shade rate to sow;
C, children's plantation shade rate in age is low, selects spring or summer to sow, and described green manure can also be elected the green manure kind that shade tolerance is low, the pH optimum range is wide additional member except the kind described in the S1;
Second step, the plantation of green manure:
A, rhizobium and the phosphate fertilizer seed dressing of mating with symbiosis earlier before the leguminous green manure plantation;
The 3rd step, the results of green manure and green manuring:
The back green manuring of green manure results is joined liming as short rotten agent in dressing furrow in the green manuring process.
In the described first step, described shade tolerance is strong, the wide green manure kind of pH optimum range comprises Chinese milk vetch, broad bean, pea, cowpea, mung bean and kudzu; The green manure kind that described shade tolerance is low, the pH optimum range is wide comprises Da Ye crotalaria mucronata and blue flower sweet potato.
In described second step, so-called leguminous green manure plantation is preceding earlier with the rhizobium seed dressing of symbiosis coupling, refers to that specifically the Chinese milk vetch seed is dressed seed with the Chinese milk vetch rhizobium; The seed of cowpea, peanut, sword bean or Gui fiber crops is dressed seed with cowpea rhizobium.
In described second step:
When dressing seed with the rhizobium of symbiosis coupling earlier before the leguminous green manure plantation, its consumption is small-sized seed requirement 10
3～10
4Individual bacterium/grain seed, large seed 10
4～10
5Individual bacterium/grain seed;
When dressing seed with phosphate fertilizer, its consumption is 8～10 kilograms of every mu of usefulness of fused calcium magnesium phosphate.
Described small-sized seed comprises Chinese milk vetch, cowpea, mung bean and kudzu seed, and described large seed is broad bean, pea Da Ye crotalaria mucronata and blue flower sweet potato seed.
In described second step, the seeding quantity of green manure, spacing in the rows * line-spacing determine according to the green manure breediness;
The vacant area of every mu of bamboo grows is 0.4 mu～0.5 mu, the sowing area of green manure is 40%～50% of field seeding area, the seeding quantity of green manure be land for growing field crops green manure seeding quantity 40%～50%. wherein, the seeding quantity of Chinese milk vetch, broad bean, pea, cowpea, mung bean, kudzu, Da Ye crotalaria mucronata and blue flower sweet potato is respectively 0.75～1kg/ mu, 2.25～2.5kg/ mu, 0.9～2.5kg/ mu, 0.5～0.6kg/ mu, 0.5～0.75kg/ mu, 0.1～0.2kg/ mu, 1～1.5kg/ mu and 1.5～2.5kg/ mu in every mu of rubber plantation;
The cropping pattern of green manure is: 33～40 centimetres of Chinese milk vetch line-spacings, spacing in the rows 15～20cm; Broad bean line-spacing 80～100cm, spacing in the rows 15～20cm; 25～40 centimetres of pea line-spacings, 5～10 centimetres of spacing in the rows; 60 centimetres of cowpea line-spacings, 30～35 centimetres of spacing in the rows; 40 centimetres of mung bean line-spacings, 12～15 centimetres of spacing in the rows; Plantation delegation in the middle of the kudzu germinating band, spacing in the rows 1m, 30～60 centimetres of Da Ye crotalaria mucronata line-spacings, spacing in the rows 15～20cm; General 20～25 centimetres of blue flower sweet potato line-spacing,, 5～10 centimetres of spacing in the rows.
In described the 3rd step,
When green manuring was in dressing furrow after the green manure results, fertilising and potassium application time in 9～October that bound rubber garden winter pipe organic fertilizer, early spring apply fertilizer, take out before Di Er the 3rd fluffy leaf carried out;
When joining liming as short rotten agent in the green manuring process, consumption is that 50 kilograms of green manure add 2 kilograms of 4% quicklimes.
In described the 3rd step,
When green manure in the using when carrying out of dressing furrow green manuring and phosphate fertilizer, potash fertilizer and lime, specifically comprise and directly spreading fertilizer over the fields in the surface of green manuring green manure, earthing then after phosphate fertilizer, potash fertilizer and lime mixed thoroughly;
When green manure is combined with nitrogen fertilizer application when carrying out in dressing furrow green manuring, then nitrogen fertilizer application and nitrogen fertilizer potentiating agent in dressing furrow earlier, and then green manure green manuring, and spread fertilizer over the fields quicklime on the green manure surface, earthing then.
Described phosphate fertilizer comprises superphosphate, and described potash fertilizer comprises potassium chloride; Described nitrogen fertilizer potentiating agent comprises dicyandiamide.
As green manure best harvest time can not be daily with bamboo grows the fertilization time coupling, in the wide dead covering of germinating band middle cover 1.5-2.0 rice, thickness is 15-20 centimetre, spreads fertilizer over the fields quicklime on it;
Determine according to the fertile characteristic of need of rubber plantation soil nutrient supply characteristic, gum and the nutrient supply amount of green manuring green manure with the consumption of green manuring green manure with the phosphate fertilizer of executing, nitrogenous fertilizer, potash fertilizer:
Rate of fertilizer=[(target output+leaf development amount) required amount of nutrients of *-(amount of nutrients that plantation soil nutrient supply+green manure contains)]/(nutrient content * utilization rate of fertilizer in the fertilizer);
Wherein, in the rubber plantation, the availability of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer is calculated by 30%, 15% and 50% respectively; The amount of nutrients that plantation soil nutrient supply and green manure contain is the measured value of institute's sample thief.
The so-called dicyandiamide of the present invention, English dicyandiamide abbreviates DCD as.
Beneficial effect of the present invention can be summarized as follows:
1, the present invention is directed to rubber plantation soil severe acidification, simultaneously, the current also situation of not systematic Prevention Technique system, according to farming operating time processes such as rubber plantation soil application, winter pipes, select the higher leguminous green manure of acidproof, anti-shade rate for use, in conjunction with the utilization of microbial manure, DCD, lime etc., improve the content of plantation soil pH, the soil organic matter etc., thus improvement rubber plantation acidified soil.
2, the present invention can reach and improve the plantation soil pH, thereby alleviates or solution plantation soil acidification problem
Description of drawings
Fig. 1 is the flow chart of rubber plantation of the present invention conditioner for acidified soil technology.
Embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
A kind of rubber plantation conditioner for acidified soil method, comprise that step is as follows: the first step, sowing time and green manure breed selection: A become plantation shade rate height in age, if at the beginning of selecting the autumn, spring or summer sow, described green manure selects that shade tolerance is strong, the wide green manure kind of pH optimum range; B becomes the plantation in age, if select late autumn or winter to sow green manure since vegetative period in the winter time, become plantation fallen leaves in winter in age, can also select the low green manure kind of shade rate to sow; C, children's plantation shade rate in age is low, selects spring or summer to sow, and described green manure can also be elected the green manure kind that shade tolerance is low, the pH optimum range is wide additional member except the kind described in the S1;
Second step, the plantation of green manure: A, rhizobium and the phosphate fertilizer seed dressing of mating with symbiosis earlier before the leguminous green manure plantation; In the 3rd step, the results of green manure and green manuring: the back green manuring of green manure results is joined liming as short rotten agent in dressing furrow in the green manuring process.
In a preferred embodiment, in the described first step, described shade tolerance is strong, the wide green manure kind of pH optimum range comprises Chinese milk vetch, broad bean, pea, cowpea, mung bean and kudzu; The green manure kind that described shade tolerance is low, the pH optimum range is wide comprises Da Ye crotalaria mucronata and blue flower sweet potato; In described second step, so-called leguminous green manure plantation is preceding earlier with the rhizobium seed dressing of symbiosis coupling, refers to that specifically the Chinese milk vetch seed is dressed seed with the Chinese milk vetch rhizobium; The seed of cowpea, peanut, sword bean or Gui fiber crops is dressed seed with cowpea rhizobium.
In the embodiment that is more preferably, in described second goes on foot: when dressing seed with the rhizobium of symbiosis coupling earlier before the leguminous green manure plantation, its consumption is small-sized seed requirement 10
3～10
4Individual bacterium/grain seed, large seed 10
4～10
5Individual bacterium/grain seed; When dressing seed with phosphate fertilizer, its consumption is 8～10 kilograms of every mu of usefulness of fused calcium magnesium phosphate; Described small-sized seed comprises Chinese milk vetch, cowpea, mung bean and kudzu seed, and described large seed is broad bean, pea Da Ye crotalaria mucronata and blue flower sweet potato seed; In described second step, the seeding quantity of green manure, spacing in the rows * line-spacing determine according to the green manure breediness; The vacant area of every mu of bamboo grows is 0.4 mu～0.5 mu, the sowing area of green manure is 40%～50% of field seeding area, the seeding quantity of green manure be land for growing field crops green manure seeding quantity 40%～50%. wherein, the seeding quantity of Chinese milk vetch, broad bean, pea, cowpea, mung bean, kudzu, Da Ye crotalaria mucronata and blue flower sweet potato is respectively 0.75～1kg/ mu, 2.25～2.5kg/ mu, 0.9～2.5kg/ mu, 0.5～0.6kg/ mu, 0.5～0.75kg/ mu, 0.1～0.2kg/ mu, 1～1.5kg/ mu and 1.5～2.5kg/ mu in every mu of rubber plantation; The cropping pattern of green manure is: 33～40 centimetres of Chinese milk vetch line-spacings, spacing in the rows 15～20cm; Broad bean line-spacing 80～100cm, spacing in the rows 15～20cm; 25～40 centimetres of pea line-spacings, 5～10 centimetres of spacing in the rows; 60 centimetres of cowpea line-spacings, 30～35 centimetres of spacing in the rows; 40 centimetres of mung bean line-spacings, 12～15 centimetres of spacing in the rows; Plantation delegation in the middle of the kudzu germinating band, spacing in the rows 1m, 30～60 centimetres of Da Ye crotalaria mucronata line-spacings, spacing in the rows 15～20cm; General 20～25 centimetres of blue flower sweet potato line-spacing,, 5～10 centimetres of spacing in the rows.In described the 3rd step, when green manuring was in dressing furrow after the green manure results, fertilising and potassium application time in 9～October that bound rubber garden winter pipe organic fertilizer, early spring apply fertilizer, take out before Di Er the 3rd fluffy leaf carried out; When joining liming as short rotten agent in the green manuring process, consumption is that 50 kilograms of green manure add 2 kilograms of 4% quicklimes.It can in and organic acid, accelerate organic decomposition, simultaneously, ammonium nitrogen, the nitrate nitrogen that can avoid organic nitrogen to transform in the later stage again descend soil pH.
In the embodiment that is more preferably, in described the 3rd step, when green manure in dressing furrow green manuring and phosphate fertilizer, potash fertilizer and lime use combination when carrying out, specifically comprise and directly spreading fertilizer over the fields in the surface of green manuring green manure, earthing then after phosphate fertilizer, potash fertilizer and lime mixed thoroughly; When green manure is combined with nitrogen fertilizer application when carrying out in dressing furrow green manuring, then nitrogen fertilizer application and nitrogen fertilizer potentiating agent in dressing furrow earlier, and then green manure green manuring, and spread fertilizer over the fields quicklime on the green manure surface, earthing then.Described phosphate fertilizer comprises superphosphate, and described potash fertilizer comprises potassium chloride; Described nitrogen fertilizer potentiating agent comprises dicyandiamide.As green manure best harvest time can not be daily with bamboo grows the fertilization time coupling, in the wide dead covering of germinating band middle cover 1.5-2.0 rice, thickness is 15-20 centimetre, spreads fertilizer over the fields quicklime on it; Determine according to the fertile characteristic of need of rubber plantation soil nutrient supply characteristic, gum and the nutrient supply amount of green manuring green manure with the consumption of green manuring green manure with the phosphate fertilizer of executing, nitrogenous fertilizer, potash fertilizer:
Rate of fertilizer=[(target output+leaf development amount) required amount of nutrients of *-(amount of nutrients that plantation soil nutrient supply+green manure contains)]/(nutrient content * utilization rate of fertilizer in the fertilizer);
Wherein, in the rubber plantation, the availability of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer is calculated by 30%, 15% and 50% respectively; The amount of nutrients that plantation soil nutrient supply and green manure contain is the measured value of institute's sample thief.
In certain concrete enforcement:
Train the rubber plantation of luxuriant team on training farm, west, Danzhou City, Hainan Province and carried out the conditioner for acidified soil engineering test of two-year rubber plantation, the result shows, rational application of fertilizers, green manure-crotalaria mucronata green manuring, execute quicklime etc. and improved rubber plantation germinating band and dressing furrow soil ph, simultaneously, rational application of fertilizers, green manure-crotalaria mucronata green manuring, the processing of executing combinations such as quicklime are best to the improved effect of plantation soil acidity.In addition, the plantation of crotalaria mucronata, quicklime uses to use with uniting of the two and has improved the plantation soil organic matter content.
The variation of training farm, the table 1 west luxuriant team of training rubber plantation germinating band and dressing furrow soil pH
Annotate: before the test germinating band, dressing furrow 0～20cm soil layer pH be respectively 4.56 and 4.53,20～40cm soil layer ph be respectively 4.62 and 4.59.Urea, superphosphate, potassium chloride amount of application are respectively 305,440,150 gram/strains in the conventional fertilizer application. year; Then be respectively 152.5,820,75 gram/strains in the proportion fertilizer. year, simultaneously, the DCD consumption is 7 gram/strains. year, the quicklime consumption is 100kg/ mu, wherein part and green manure green manuring are used together, and consumption is the quicklime of 50kg green manure with 2kg4%, and all the other then spread fertilizer over the fields when green manure is planted.Crotalaria mucronata was sowed in August, gathered in green manuring January.Bright careless output is 1300kg/ mu (the green manure cultivated area of every mu of rubber plantation is about 0.45 mu), and individual plant bamboo grows green manure green manuring amount is 39kg.
Variation (the unit: g/kg) of training farm, the table 2 west luxuriant team of training rubber plantation germinating band and dressing furrow soil organic matter content
Annotate: germinating band, dressing furrow 0～20cm soil layer organic matter are respectively 15.80g/kg and 15.41g/kg before the test, and 20～40cm soil layer organic matter is respectively 12.37g/kg and 11.58g/kg.
More than by the detailed description of concrete and preferred embodiment the utility model; but those skilled in the art should be understood that; the utility model is not limited to the above embodiment; all within spirit of the present utility model and principle; any modification of doing, be equal to replacement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1. a rubber plantation conditioner for acidified soil method is characterized in that, comprises that step is as follows:
The first step, sowing time and green manure breed selection:
A becomes plantation shade rate height in age, if at the beginning of selecting the autumn, spring or summer sow, described green manure selects that shade tolerance is strong, the wide green manure kind of pH optimum range;
B becomes the plantation in age, if select late autumn or winter to sow green manure since vegetative period in the winter time, become plantation fallen leaves in winter in age, can also select the low green manure kind of shade rate to sow;
C, children's plantation shade rate in age is low, selects spring or summer to sow, and described green manure can also be elected the green manure kind that shade tolerance is low, the pH optimum range is wide additional member except the kind described in the above-mentioned steps A;
Second step, the plantation of green manure:
Rhizobium and the phosphate fertilizer seed dressing of mating with symbiosis earlier before the leguminous green manure plantation;
The 3rd step, the results of green manure and green manuring:
The back green manuring of green manure results is joined liming as short rotten agent in dressing furrow in the green manuring process;
In described the 3rd step,
When green manuring was in dressing furrow after the green manure results, fertilising and potassium application time in 9～October that bound rubber garden winter pipe organic fertilizer, early spring apply fertilizer, take out before Di Er the 3rd fluffy leaf carried out;
When joining liming as short rotten agent in the green manuring process, consumption is that 50 kilograms of green manure add 2 kilograms of 4% quicklimes.
2. the rubber plantation conditioner for acidified soil method of stating according to claim 1 is characterized in that: in the described first step, described shade tolerance is strong, the wide green manure kind of pH optimum range comprises Chinese milk vetch, broad bean, pea, cowpea, mung bean and kudzu; The green manure kind that described shade tolerance is low, the pH optimum range is wide comprises Da Ye crotalaria mucronata and blue flower sweet potato.
3. the rubber plantation conditioner for acidified soil method of stating according to claim 1 is characterized in that: in described second step, earlier with the rhizobium seed dressing of symbiosis coupling, specifically refer to the Chinese milk vetch rhizobium seed dressing of Chinese milk vetch seed before so-called leguminous green manure is planted; The seed of cowpea, peanut, sword bean or Gui fiber crops is dressed seed with cowpea rhizobium.
4. rubber plantation according to claim 1 conditioner for acidified soil method is characterized in that: in described second step:
When dressing seed with the rhizobium of symbiosis coupling earlier before the leguminous green manure plantation, its consumption is small-sized seed requirement 10
3～10
4Individual bacterium/grain seed, large seed 10
4～10
5Individual bacterium/grain seed;
When dressing seed with phosphate fertilizer, its consumption is 8～10 kilograms of every mu of usefulness of fused calcium magnesium phosphate.
5. the rubber plantation conditioner for acidified soil method of stating according to claim 4, it is characterized in that: described small-sized seed comprises Chinese milk vetch, cowpea, mung bean and kudzu seed, described large seed is broad bean, pea, Da Ye crotalaria mucronata and blue flower sweet potato seed.
6. the rubber plantation conditioner for acidified soil method of stating according to claim 1 is characterized in that: in described second step, the seeding quantity of green manure, spacing in the rows * line-spacing determine according to the green manure breediness;
The vacant area of every mu of bamboo grows is 0.4 mu～0.5 mu, and the sowing area of green manure is 40%～50% of field seeding area, and the seeding quantity of green manure is the seeding quantity 40%～50% of land for growing field crops green manure; Wherein, the seeding quantity of Chinese milk vetch, broad bean, pea, cowpea, mung bean, kudzu, Da Ye crotalaria mucronata and blue flower sweet potato is respectively 0.75～1kg/ mu, 2.25～2.5kg/ mu, 0.9～2.5kg/ mu, 0.5～0.6kg/ mu, 0.5～0.75kg/ mu, 0.1～0.2kg/ mu, 1～1.5kg/ mu and 1.5～2.5kg/ mu in every mu of rubber plantation;
The cropping pattern of green manure is: 33～40 centimetres of Chinese milk vetch line-spacings, spacing in the rows 15～20cm; Broad bean line-spacing 80～100cm, spacing in the rows 15～20cm; 25～40 centimetres of pea line-spacings, 5～10 centimetres of spacing in the rows; 60 centimetres of cowpea line-spacings, 30～35 centimetres of spacing in the rows; 40 centimetres of mung bean line-spacings, 12～15 centimetres of spacing in the rows; Plantation delegation in the middle of the kudzu germinating band, spacing in the rows 1m, 30～60 centimetres of Da Ye crotalaria mucronata line-spacings, spacing in the rows 15～20cm; General 20～25 centimetres of blue flower sweet potato line-spacing, 5～10 centimetres of spacing in the rows.
7. rubber plantation according to claim 1 conditioner for acidified soil method is characterized in that: in described the 3rd step,
When green manure in the using when carrying out of dressing furrow green manuring and phosphate fertilizer, potash fertilizer and lime, specifically comprise and directly spreading fertilizer over the fields in the surface of green manuring green manure, earthing then after phosphate fertilizer, potash fertilizer and lime mixed thoroughly;
When green manure is combined with nitrogen fertilizer application when carrying out in dressing furrow green manuring, then nitrogen fertilizer application and nitrogen fertilizer potentiating agent in dressing furrow earlier, and then green manure green manuring, and spread fertilizer over the fields quicklime on the green manure surface, earthing then.
8. the rubber plantation conditioner for acidified soil method of stating according to claim 7, it is characterized in that: described phosphate fertilizer comprises superphosphate, described potash fertilizer comprises potassium chloride; Described nitrogen fertilizer potentiating agent comprises dicyandiamide.
9. the rubber plantation conditioner for acidified soil method of stating according to claim 7 is characterized in that:
As green manure best harvest time can not be daily with bamboo grows the fertilization time coupling, in the wide dead covering of germinating band middle cover 1.5-2.0 rice, thickness is 15-20 centimetre, spreads fertilizer over the fields quicklime on it;
Determine according to the fertile characteristic of need of rubber plantation soil nutrient supply characteristic, gum and the nutrient supply amount of green manuring green manure with the consumption of green manuring green manure with the phosphate fertilizer of executing, nitrogenous fertilizer, potash fertilizer:
Rate of fertilizer=[(target output+leaf development amount) required amount of nutrients of *-(amount of nutrients that plantation soil nutrient supply+green manure contains)]/(nutrient content * utilization rate of fertilizer in the fertilizer);
Wherein, in the rubber plantation, the availability of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer is calculated by 30%, 15% and 50% respectively; The amount of nutrients that plantation soil nutrient supply and green manure contain is the measured value of institute's sample thief.
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