Indoor bioassay method procedure for studying synergistic effect of aid on herbicide for controlling farmland weeds

Abstract

The invention discloses an indoor bioassay method procedure for studying the synergistic effect of an aid on a herbicide for controlling farmland weeds. According to the method procedure, steps for studying the synergistic effect of the herbicide aid on the herbicide for controlling farmland weeds are described in detail in five aspects of aid selection, herbicide selection, determination of the optimal synergistic dose of the aid on the herbicide, study of the aid on reduction action of the herbicide and influence of mixed use of the aid and the herbicide on crop safety. The method procedureis applicable to study of the synergistic effect of the spray aid on a stem leaf spray treatment agent on controlling multiple crop farmland weeds after seedling emergence of crops and in the 3-5 leafperiod of the weeds; related requirements and advice are proposed for section of the herbicide and the aid in an experiment, and blind selection is avoided; standard requirements are made for the doses of the herbicide and the aid in each experiment step; the experiment step of determination of the optimal synergistic dose of the aid on the herbicide is firstly proposed for different herbicides and different weeds, and experiment design is more scientific and strict; on the basis of the optimal synergistic dose of the aid, the reduction action of the herbicide is studied, and the optimum of the reduction action of the aid is guaranteed. The method procedure is a scientific, reasonable and feasible indoor bioassay method procedure for studying the synergistic effect of the aid on the herbicide for controlling farmland weeds.

Description

technical field [0001] The invention belongs to the technical field of plant protection, and relates to an indoor bioassay method procedure for studying the synergistic effect of herbicide auxiliaries on the control and control of farmland weeds by herbicides. Background technique [0002] At present, chemical weeding is the core of China's farmland weeding technology, but in production, there are often low utilization rates of herbicides, large usage or even excessive use of herbicides. Long-term excessive use of herbicides will cause a series of problems such as crop phytotoxicity, pesticide residues, environmental pollution, and weed resistance, and even aggravate the resistance level of resistant weeds, and make it become multi-resistant. It is difficult to prevent. Therefore, the reduction of herbicides is of great significance for promoting the development of green agriculture, delaying the emergence of weed resistance and the control of resistant weeds. In recent ye...

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Problems solved by technology

[0002] At present, chemical weeding is the core of China's farmland weeding technology, but in production, there are often low utilization rates of herbicides, a large amount of use or even excessive use of herbicides

Long-term excessive use of herbicides will cause a series of problems such as crop phytotoxicity, pesticide residues, environmental pollution, and weed resistance, and even aggravate the resistance level of resistant weeds, and make it become multi-resistant. too hard to prevent

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