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Nitrogen application method for balancing relation between supply and demand of nitrogen in intercropping of peas and corn

A technology for pea nitrogen and corn, applied in fertilization methods, fertilization devices, leguminous plant cultivation and other directions, can solve the problems of imbalance between pea nitrogen supply and demand, increase environmental pressure, hinder complementary effects, etc., to promote synergistic utilization, increase Output, the effect of solving the imbalance between supply and demand

Inactive Publication Date: 2019-08-16
GANSU AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the two crops in intercropping have obvious differences in biological characteristics. Different component crops have different requirements for nitrogen, and the demand time is even more different from each other. The "one size fits all" management method is not suitable for this system. In addition, the existing Nitrogen application in maize production often "emphasizes the early stage and neglects the late stage", which leads to the imbalance of nitrogen supply and demand in the intercropping of corn and pea, which not only seriously hinders the complementary effect between the two crop species, but also causes waste of nitrogen. increased environmental stress

Method used

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  • Nitrogen application method for balancing relation between supply and demand of nitrogen in intercropping of peas and corn

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Embodiment 1

[0025] This embodiment provides a nitrogen application method to balance the relationship between corn intercropping pea nitrogen supply and demand. The planting mode of this method is: corn intercropping pea, corn width 110cm, pea width 80cm; corn belt 3 rows, pea belt 4 row; corn row spacing 40cm, plant spacing 27cm, pea row spacing 20cm; corn sowing density 52,000 plants / hm 2 , sowing density of peas is 380,000 plants / hm 2 .

[0026] This embodiment is specifically to carry out zonal nitrogen application to the corn belt and the pea belt, comprising the following steps:

[0027] S1. Level the land before sowing, and then apply pure nitrogen 42kg / hm according to the corn belt 110cm 2 With pure phosphorus 105kg / hm 2 22.8kg / hm of pure nitrogen applied to 80cm of pea belt 2 With pure phosphorus 19kg / hm 2 , spread all evenly, and then use a disc harrow and a ground hoe to turn the fertilizer into the soil parallel to the natural intercropping zone, and level the ground surf...

Embodiment 2

[0036] The nitrogen application method of this embodiment is the same as that of Example 1, except that the total amount of pure nitrogen applied to the corn belt is 207kg / hm 2 , the mass of the basic pure nitrogen, the pure nitrogen of the first topdressing, the pure nitrogen of the second topdressing and the pure nitrogen of the third topdressing in the corn belt are 46kg / hm respectively 2、23kg / hm 2 、92kg / hm 2 、46kg / hm 2 .

Embodiment 3

[0038] The nitrogen application method of this embodiment is the same as that of Example 1, except that the total amount of pure nitrogen applied to the corn belt is 209kg / hm 2 , the mass of the basic pure nitrogen, the first topdressing pure nitrogen, the second topdressing pure nitrogen and the third topdressing pure nitrogen in the corn belt are respectively 38kg / hm 2 、38kg / hm 2 、76kg / hm 2 、57kg / hm 2 .

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Abstract

The invention provides a nitrogen application method for balancing the relation between supply and demand of nitrogen in intercropping of peas and corn. The nitrogen application method comprises the steps as follows: S1, intercropping planting of corn and peas is performed in the line number ratio of (2-3):4, and the line width ratio of corn belts to pea belts is (8-11):8; basic pure nitrogen is applied to the corn belts and the pea belts, pure phosphorus is applied, turning is performed after fertilization, and the corn belts are covered with mulching films; S2, pure nitrogen is dressed on the corn belts and the pea belts for the first time at the stem elongation stage of corn; S3, pure nitrogen is dressed on the corn belts and the pea belts for the second time at the flare opening stageof corn; S4, pure nitrogen is dressed on the corn belts for the third time 10 days after blooming of corn, and no fertilizer is applied to the pea belts. Nitrogen is supplied at different stages and belts according to nitrogen demand laws of the corn and the peas, interspecific competition of corn and peas is regulated, and the problem of imbalance between supply and demand of nitrogen in traditional production of intercropping of peas and corn is effectively solved; meanwhile, by regulation of interspecific competition and complementation of an intercropping system, the synergistic utilization of nitrogen is promoted, the utilization rate of nitrogen fertilizer is increased, and the yield is increased.

Description

technical field [0001] The invention relates to a nitrogen application method in the intercropping process of corn and pea, in particular to a nitrogen application method for balancing the nitrogen supply and demand relationship between corn and pea intercropping. Background technique [0002] Intercropping is the essence of my country's agriculture. It has obvious advantages in many aspects such as improving land utilization, increasing crop productivity, and optimizing agricultural resource utilization. Especially the grass / bean intercropping composed of gramineous crops and leguminous crops can significantly promote The play of complementary effects between species improves the sustainability of crop production. Nitrogen is an essential nutrient element in the growth and development of crops, and its contribution rate in increasing grain production is as high as about 45%. [0003] However, the traditional production concept and management experience pay more attention to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/20A01G22/40A01C21/00
CPCA01C21/005A01G22/20A01G22/40
Inventor 胡发龙柴强赵财于爱忠樊志龙殷文范虹
Owner GANSU AGRI UNIV
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