Closed weeding method for machine transplanting rice field

Abstract

The invention discloses a closed weeding method for a machine transplanting rice field. The closed weeding method comprises the steps of applying a weeding agent: performing primary closing, applying mefenacet, isoproturon and ethoxysulfuron into the rice field within 2-3 days before rice transplanting, and then performing secondary closing, and applying butachlor, isoproturon and bensulfuron methyl into the rice field within 7-15 days after rice transplanting. The invention provides a machine transplanting rice twice-closed weeding technology at first. By aiming at the characteristics that grassy weeds, broadleaf weeds and cyperaceae weeds grow in a hybrid manner in the current large-area mechanical planting process and the weeds have two weed growing rush hours in the field, a mode for respectively applying different weeding agents is adopted, so that the conventional method for 'primary closing, secondary killing and third supplementing' is broken through; medicaments are high in complementarity and obvious in mixing synergism effect; the herbicide controlling spectrum is expanded, the using amount is small, and the closed weeding method is safe to rice.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a closed weeding method for machine-transplanted rice fields. Background technique [0002] Rice is the food crop with the largest planting area and the largest yield in China, and the safety of rice production is the main issue of my country's food security. In recent years, my country has vigorously developed family farms and large planters, and advocated mechanical transplanting technology. However, due to the ecological environment of alternating dry and wet during the process of machine transplanting, weeds in dry fields and paddy fields occur simultaneously in machine-transplanted rice fields. Weed damage such as barnyardgrass, daughter, crabgrass, bermudagrass, and sagittarius is becoming more and more serious, which is the main obstacle affecting the high and stable yield of machine-transplanted rice. [0003] The seedlings of machine-transplanted rice are relativel...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of mixed growth of weeds in paddy fields, poor control effect of single use, insufficient weeding spectrum, high cost of stem and leaf weeding, short service life and safety to rice, a closed weeding method for machine-transplanted paddy fields was proposed. Through two different medication techniques, the herbicidal spectrum is expanded, the control effect is improved, the environmental pollution is small, and it is beneficial to the comprehensive control of machine-transplanted rice without weed damage. The present invention is realized in this way:

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