Composite herbicide for preemergence soybean

Abstract

The invention discloses a composite herbicide for preemergence soybean. The composite herbicide comprises, by weight, 15-20 parts of an ingredient A as an active ingredient, 10-15 parts of an ingredient B as an active ingredient and 10-20 parts of an ingredient C as an active ingredient. The ingredient A is clomazone, the ingredient B is flumioxazin or flumetsulam, and the ingredient C is metolachlor or acetochlor. The oil suspension-type composite herbicide also comprises, by weight, 25-30 parts of a wetting agent and 45-50 parts of missible oil. The composite herbicide has good effects of removing ubiquitous refractory dayflower, cephalanoplos segetum, tibetan thistle, field horsetail and sonchus brachyotus in the soybean field, is safe for soybean seedling, does not influence soybean seedling growth, can improve prevention effects, can enlarge a weed control spectrum, can reduce an effective component use amount, can save a use cost and can reduce environment pollution.

Description

technical field [0001] The invention belongs to the technical field of pesticides, in particular to a soybean pre-emergence compound herbicide. Background technique [0002] At present, there are many kinds of weeds growing in soybean fields, including gramineous weeds, broad-leaved weeds, sedges and other types of weeds. Using a herbicide alone cannot effectively control the occurrence of weeds in rice fields. Herbicide varieties with active components often have different degrees of defects in the control of weeds in agricultural fields. For example, weeds are prone to resistance after continuous application, the herbicide spectrum is narrow, and frequent applications will aggravate environmental pollution. Moreover, it affects the taste of the crop itself; and many herbicides will damage the seedling itself when used, affecting its growth rate. Difficult-to-control weeds such as Commelina chinensis, Echinacea chinensis, Prickly thorny thorn, Weed vetch, and Chickweed are...

AI Technical Summary

Problems solved by technology

[0002] At present, there are many kinds of weeds growing in soybean fields, including gramineous weeds, broad-leaved weeds, sedges and other types of weeds. Using a herbicide alone cannot effectively control the occurrence of weeds in rice fields. The herbicide varieties with active components often have different degrees of defects in th...