Integrated cultivation method of drip irrigation, water and fertilizer for wheat stubble summer maize under no-tillage direct seeding conditions
A no-tillage direct seeding and cultivation method technology, applied in the agricultural field, can solve the problems of poor coordination and unification, low proportion of deep roots in corn, and easy lodging, so as to enhance the later lodging resistance, stability and wheat yield, and promote The effect of land transfer
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Embodiment 1
[0027] The present embodiment provides a kind of drip irrigation water and fertilizer integrated cultivation method of wheat stubble summer maize under a kind of concrete no-tillage direct seeding condition, comprises the following steps:
[0028] (1) Moisture-grabbing sowing or seedling emergence after sowing with small water drip irrigation, row spacing is 25cm, 11 rows per ridge, ridge width 0.5m, correspondingly laying 4 drip irrigation pipes / belts, 1 pipe 2-3 rows Wheat, specifically, the 4 drip irrigation pipes / belts in each furrow include one drip irrigation for every 2 rows of wheat (except for the 5th-7th row from the left that lays a pipe / belt for 3 rows of wheat); then, in the wheat During the overwintering period, rising period, jointing period, flowering period, and grouting period of the growth period, when the water content of the 0-40cm soil layer is lower than 60% of the field water holding capacity, drip irrigation is carried out, each time 10-20 cubic meters ...
Embodiment 2
[0034]Under the condition of drip irrigation, the effect of pipe laying mode under the integration of drip irrigation, water and fertilizer on the nitrogen accumulation and distribution, soil nitrate nitrogen content and yield of summer maize was studied and explored. The test was set up to control one tube in one row (65cm equidistant row mode) and one tube in two rows (3 types): 40+90cm, 45+85cm, 50+80cm, drip irrigation pipes were laid in the middle of narrow rows. The results showed that the nitrogen accumulation in the aboveground under the 45+85cm and 40+90cm one tube and two rows patterns at the maturity stage of maize was significantly higher than that of the control and 50+80cm one tube and two rows pattern, which were 35.51% and 27.06% higher than the control respectively; , the content of nitrate nitrogen from the surface to 40cm was the highest in the control model. The grain yield of 50+80cm, 45+85cm and 40+90cm was 42.31%, 28.00% and 14.56% higher than that of th...
Embodiment 3
[0038] In the present invention, the fertilization ratio of nitrogen fertilizer is 40%: 30%: 20%: 10%, and the fertilization ratio of phosphorus fertilizer is 40%: 30%: 20%: 10% in corn sowing, corn big trumpet stage, tasseling and silking stage, and grouting stage , the ratio of potassium fertilizer application is 40%:40%:20%:0%. Adopting this specific fertilization plan has significant advantages. It appropriately increases the amount of seed fertilizer and nitrogen fertilizer, reduces the amount of topdressing fertilizer in the big bell-mouth stage, and can significantly increase the amount of corn fertilization. The root density of the deep soil can effectively improve the root structure, greatly increase the lodging resistance of corn plants, and significantly increase the yield of corn.
[0039] See attached figure 2 , 3 , under the condition of field drip irrigation, the effects of different nitrogen fertilization systems on the root distribution and yield of summer m...
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