Method for non-tillage rape sowing in paddy field

The invention belongs to the technical field of agricultural planting, and discloses a method for non-tillage rape sowing in a paddy field. The method includes the steps that after rice is harvested,straw is stacked by means of a decomposition agent; 400-500 ml of 10% gyphosate solution is sprayed per mu 7 days before sowing, 45 g of clethodim and 75 g of quinamide are mixed with water and sprayed per mu after seedling are uniformized, and chemical weeding is conducted on the paddy field; before sowing, 40 kg of fertilizer special for rape is applied per mu to serve as base fertilizer, and 1kg of borax is additionally applied per mu; sowing is conducted from September 28th to October 1st, 250-300 g of rapeseeds and 2-3 kg of urea are mixed and sown per mu, and the straw is evenly scattered to cover the rapeseeds; in the true leaf period when 4-5 leaves grow on each seedling, 26000-30000 basic seedlings are planted per mu. By using high-yield varieties and conducting non-tillage sowing, straw covering, disease