Novel efficient comprehensive chemical prevention and treatment method for rice field weed sagittaria trifolia

Abstract

The invention discloses a novel efficient comprehensive chemical prevention and treatment method for a rice field weed sagittaria trifolia. The method comprises the following steps: 1) 5-10 days before rice transplanting, applying 30% anilofos and 15% ethoxysulfuron, or 10% pyrazosulfuron-ethyl to a rice field, keeping water for 7-10 days, discharging out the water with the pesticides, changing water, and transplanting rice, wherein a water layer is 3-5cm when the chemicals are applied, and the application amount of the 30% anilofos is 20-30 g / mu; 2) after rice transplanting, applying 48% bentazone to the rice field, discharging out a shallow water layer before chemical application till weeds are exposed on the water surface, returning the water into the rice field after chemical application, and keeping the water layer, wherein the amount of the bentazone is 160-200 ml / mu. Tests show that by adopting the chemical prevention and treatment method disclosed by the invention, growth of the rice field weed sagittaria trifolia can be effectively prevented, and the rice yield is not affected.

Description

technical field [0001] The invention belongs to the field of agricultural prevention and control, and in particular relates to a novel high-efficiency chemical comprehensive prevention and control method for weeds in rice fields. Background technique [0002] Rice is one of the most important food crops in my country. In 2016, the rice planting area reached 3017.8 hectares. As an important commercial grain base in my country, Heilongjiang Province accounts for 10.6% and 10.9% of the national rice production respectively. play an important role in production. However, the occurrence of weeds in rice fields seriously affects the yield and quality of rice. Weeds not only compete with rice for nutrients and light, but also serve as hosts and habitats for various diseases and insect pests, causing serious losses to rice production. [0003] Wild Sagittaria trifolia (Sagittaria trifolia L.) is a variant of Sagittaria trifolia. Common weeds, both sexual reproduction and vegetative...

AI Technical Summary

Problems solved by technology

[0006] There are not many studies on Arthia sativa at home and abroad, mainly focusing on cultivation, genes and resistance, and there are few studies on effective control of Arthia sativa

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