Grass lawn herbicide and its preparing method

Abstract

The present invention relates to a lawn weedicide and its preparation method. The composition of said lawn weedicide includes (by wt%) 1-50% of alpha-bifluoropropanoic acid, 1-20% of fenchlorazole, 5-10% of synergistic agent and the rest is adjuvant. Its preparation method includes the following steps: synthesizing monofluoride, synthesizing bifluoride, dissolving three kinds of isomer compounds in acetylacetone, separating to obtain alpha-bifluroropropanoic acid solution, mixing alpha-bifluoropropanoic acid, fenchlorazole, bromoxynil and adjuvant, stirring them uniformly so as to obtain the invented weedicide.

Description

Technical field:

[0001] The invention relates to a herbicide, in particular to a grass lawn herbicide and a preparation method thereof. Background technique:

[0002] At present, the lawn area in China is getting larger and larger, and the prevention and control of weeds in lawns has become the biggest problem for lawn managers. Most of them are manual weeding, which requires large investment, low efficiency and poor results. Weeds in the lawn can be divided into three categories: broad-leaved weeds, cyperaceae weeds, and gramineous weeds. In the field of domestic lawn chemical weeding, currently there are very few agents that can effectively control gramineous weeds on gramineous lawns. Since 1998, some experts have recommended the use of wheat field herbicide Jing (high) oxazoprop in grass lawns to control grass weeds such as crabgrass, goosegrass, and barnyard grass. Experiments have proved that the agent It only has good effect on grass weeds with less than 3 leaves, and is m...