Special weeding method for organic rice field

Abstract

The invention relates to a special weeding method for an organic rice field. The convenient and effective control of weeds of organic rice is an urgent problem to be solved in the production process of organic rice. The special weeding method comprises the following steps of (1) grinding soybean into soybean meal with granularity less than 1mm; (2) applying 150-180kg of soybean meal per 667m<2> of organic rice field; after the soybean meal is applied, generating strong reduction reaction in water of the organic rice field, consuming a large amount of oxygen in water, enabling the oxidoreduction electric level at the soil surface to suddenly descend, hindering the weed root development and seed germination, and producing a large amount of organic acids to inhibit the weed rooting and bud grouting and damage weed core leaves, so as to reach the weeding effect; (3) timely applying within 3-5 days after rice transplanting, wherein the soybean meal is mainly used for removing the low-age weeds, and shall be timely applied after rice transplanting; in the applying process, the organic rice field shall be reserved with a water layer with thickness more than 5cm, and the water layer shall be maintained for more than 7 days. The special weeding method has the advantages that the technology is simple, and the weeds of organic rice can be conveniently and effectively controlled.

Description

technical field [0001] The invention relates to a special weeding method for organic paddy fields. Background technique [0002] Weeds compete with rice for fertilizer, water, sunlight and space, hindering ventilation and light transmission in the field, resulting in reduced rice yield and quality; many weeds are also intermediate hosts or boarding places for pathogenic microorganisms and pests, which can lead to the occurrence of diseases and insect pests. It is estimated that the loss of rice yield due to weeds exceeds 10%. Therefore, weeding is an important part of rice production. At present, conventional agriculture mainly relies on various chemical herbicides to kill weeds, but environmental pollution, ecological imbalance, pesticide residues and other problems caused by the large-scale application of chemical herbicides all year round have seriously threatened human health and the living environment. [0003] Organic rice follows the principles of organic agricultur...

AI Technical Summary

Problems solved by technology

Although there are also some weeding methods for organic rice fields now, as disclosed on July 16, 2014, the publication number is CN103918510A in the Chinese patent, which discloses a method for weeding with organic rice paddy double-functional layers, but the process of the method complex