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
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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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