Wheat stubble summer corn drip irrigation water and fertilizer integration cultivation method under no-tillage direct-sowing condition
A no-tillage direct seeding and cultivation method technology, applied in the agricultural field, can solve problems such as easy lodging, poor coordination and unification, and low proportion of deep roots in corn, so as to increase root density, stabilize wheat yield, and increase lodging resistance Effect
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Embodiment 1
[0032] 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:
[0033] (1) When wheat is sown, carry out moisture-grabbing sowing or drip irrigation with small amount of water after sowing to emerge. The row spacing is 25cm, 11 rows per ridge, and the ridge width is 0.5m. Correspondingly, 4 drip irrigation pipes / belts are laid, and 1 pipe has 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, dri...
Embodiment 2
[0039] 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 with one row (65cm equidistant row mode) and one tube with 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 nitrogen accumulation in the aboveground under the 45+85cm and 40+90cm one-tube-two-row patterns was significantly higher than that of the control and 50+80cm one-tube-two-row patterns at the maize maturity stage, which were 35.51% and 27.06% higher than the control, respectively; , the content of nitrate nitrogen from the surface to 40cm is 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 the control, ...
Embodiment 3
[0043] In the present invention, the nitrogen fertilization ratio is 40%: 30%: 20%: 10%, and the phosphorus fertilizer fertilization ratio is 40%: 30%: 20%: 10% in the corn sowing, corn big bell mouth 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 increases the amount of seed fertilizer and nitrogen fertilizer appropriately, 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.
[0044] See attached figure 2 , 3 , under field drip irrigation conditions, explored the effects of different nitrogen fertilization systems on the root distribution and yield of summer maize un...
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