Method for manually removing weedy rice

Abstract

The invention relates to a method for manually removing weed rice and belongs to the technical field of rice cultivation. Manual removal is still a main technical means adopted for weed rice control and removal at present, however, due to the fact that homology between the weed rice and common rice is high and the identification degree between the weed rice and common rice is not high, manual removal difficulty of the weed rice is increased, impurity removal efficiency is low, removal omission rate is high, and the rice planting cost is increased. In order to solve the problems existing in manual removal of the weed rice, a rice variety suitable for the local planting growth period of about 120 days is selected, a planting mode utilizing rice mechanical transplanting as a main mode and mechanical water sowing in drill as an auxiliary mode is adopted, 50 g of 3% gibberellic acid missible oil is mixed with 15 kg of water to be evenly sprayed on leaf surfaces of each mu 2 days after full heading of the rice, high weed rice ears are removed in time in two times 4-5 days and 8-9 days after spraying, and the rice ears are taken out of the field. By applying the method, the identification degree of the heading stage of the weedy rice can be remarkably increased, the removal efficiency of the weedy rice is improved, the removal omission rate is reduced, the overall quality and the rice yield of the rice can be improved, and the economic benefit is very remarkable.

Description

technical field [0001] The invention relates to a method for manually removing weedy rice and belongs to the technical field of rice cultivation. Background technique [0002] Weedy rice is one of the three most difficult weeds to control in rice production because of its dual nature of rice and weed growth. At present, the production generally passes strict seed inspection, deep soil plowing, and early watering before rice planting to induce Killing weedy rice after germination, crop rotation, manual removal, using specific rice varieties to select between oxazolinone herbicides and weedy rice, chemical control, etc., each method has its own advantages and disadvantages , manual removal is still the main method currently used for the control of weedy rice, but due to the high homology between weedy rice and common rice, the degree of identification between the two is not high, which increases the difficulty of manual removal. Rising costs lead to manual removal of weedy ri...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to: aim at the problem that above-mentioned artificial removal of weedy rice exists, provide a kind of artificial removal method of weedy rice, described method is to select early maturing rice variety, adopt the planting mode of mechanical transplanting or mechanical water drilling, in Spray gibberellin 2 days after the rice is fully eared, and remove weedy rice ears with high heading height in time at 4-5d and 8-9d after spraying. This method can significantly improve the recognition of weedy rice at the heading stage and improve the efficiency of impurity removal. Reduce the leakage rate, the method is easy to learn, easy to operate, easy to implement