Herbicide prepared by taking lilac leaf extract as active component, and preparation method of herbicide

Abstract

The invention relates to a herbicide prepared by taking a lilac leaf extract as an active component as well as a preparation method and application of the herbicide. The herbicide prepared by taking the lilac leaf extract as the active component is prepared from the following components by mass percent: 70-80% of the active component and the balance of auxiliary components, wherein the auxiliary components comprise a surface active agent and filler. The components of the plant-derived herbicide provided by the invention originate from the plant bodies, and the bio-herbicide takes natural products as herbicidal active component, so that the herbicide is easily degraded and is safe and environment-friendly. The herbicide has a good prevention effect on gramineous and broad-leaved weeds, especially has a special effect for the broad-leaved weeds, and can be used as a selective herbicide for gramineous crops. Compared with the prior art, the plant-derived herbicide provided by the invention has the characteristics of being high in activity, remarkable in prevention effect, higher in selectivity, and the like. The herbicide has no harm to crops and no pollution to the environment, is free from pesticide residue, does not easily cause drug resistance, and is environmentally safe.

Description

Technical field

[0001] The invention belongs to the field of biological technology, and specifically relates to a herbicide using lilac leaf extract as an active ingredient, and a preparation method and application thereof. Background technique

[0002] Weeds have huge root systems, and their water and fertilizer consumption capacity is much higher than that of crops; weeds absorb nitrogen 4-9Kg / mu, phosphorus 1.2-2Kg / mu, and potassium 6.5-9Kg / mu. As an intermediate host of crop diseases and insect pests, crops are harmed by diseases and insects; it invades above and underground spaces, affects the photosynthesis of crops, reduces crop yields significantly and reduces crop quality. At present, weeding labor has accounted for 1 / 3-1 / 2 of field labor; some weeds contain toxins and ultimately affect human and animal health. The world’s annual crop production is reduced by 9.7% due to weeds, and the yield loss is 200 billion kg. The use of chemical herbicides is the main strategy f...

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