Rice cropping method under condition of wheat straw returning to field
A wheat straw and rice cultivation technology, applied in the fields of rice cultivation, fertilization methods, organic fertilizers, etc., can solve the problems of low economic benefit, soil erosion, difficult to implement in a large area, etc., so as to improve rice yield, avoid waste, and reduce application amount. Effect
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[0033] A method for cultivating rice under the condition of returning wheat straw to the field, characterized in that it comprises the following steps:
[0034] S1. Determine the application amount of wheat straw and cut wheat straw
[0035] Wheat straw at 4500kg / hm 2 ~7500kg / hm 2 The amount of wheat straw should be returned to the field, and the wheat straw should be cut into sections with a length of 3cm to 10cm;
[0036] S2. Management of basal fertilizer
[0037] Spread the cut wheat straw evenly in the field, then evenly spread the base fertilizer on the surface of the wheat straw, and immediately perform rotary tillage with a plowing depth of 18cm-22cm; the wheat straw cut into sections, base fertilizer application, and plowing are completed within 24 hours;
[0038] The amount of basal fertilizer is converted per kg of wheat straw, urea (converted to 50% of pure nitrogen) 120kg / hm 2 ~240kg / hm 2 , superphosphate (P 2 o 5 =12%)625kg / hm 2 ~1250kg / hm 2 , potassium ...
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