Insecticide for artificially cultivated Taxus brevifolia and preparation method of insecticide

Abstract

The invention discloses an insecticide for artificially cultivated Taxus brevifolia, comprising the following components in parts by mass: 20-30 parts of Celastrus angulatus extraction liquid, 5-10 parts of matrine, 18-20 parts of tetramethrin, 14-18 parts of clove extraction liquid, 12-18 parts of Balsampear stem, 10-15 parts of Artemisia absinthium, 16-24 parts of tea saponin, 5-9 parts of turpentine, 2-4 parts of ginkgoic acid, 40-60 parts of ethanol, and 150-300 parts of water. The insecticide of the invention ensures the insecticidal quality and reduces economic loss caused by pests underthe premise of protecting normal growth of Taxus brevifolia plants, mainly adopts plant extract preparations, has no harmful substances, and ensures the quality of Taxus brevifolia.

Description

Technical field [0001] The invention relates to an insecticide, in particular to an artificially cultivated yew insecticide and a preparation method thereof. Background technique [0002] Yew, native to the rain forests of western North America. This is a tree with a smaller tree shape. It usually grows under the shade of other big trees. It is often found near rivers and streams. Experts found in its bark an alkaloid Tektronix that can inhibit the growth of certain cancers. On average, every ten Pacific yew tree bark can extract 2 grams of texel enough for a patient to treat. The bark of Pacific yew is reddish brown, similar to the English yew, its branches are very thin and slightly drooping. The leaf buds extracted in winter are covered with golden scales. Its leaves are needle-shaped. The needles are about 2.5 cm long. The upper surface is dark green and the lower surface is gray-green, forming opposite sides on the same plane of the branches. Two rows, but in the process o...

AI Technical Summary

Problems solved by technology

This is a small tree that generally grows under the shade of other large trees and is often found by rivers and streams. Experts have found an alkaloid in its bark that can inhibit the growth of certain cancers. On average, every ten pacific yew bark can extract enough 2 grams of texol for a patient’s treatment. The bark of Pacific yew is reddish brown, similar to English yew. Its branches are very thin and slightly drooping. There are golden scales on the leaf buds taken out in winter. Its leaves are needle-shaped, the needles are about 2.5 cm long, the upper surface is dark green, and the lower surface is gray-green. Two rows, but during the planting of yew trees, pests will cause damage to the yew branches and leaves, which will affect the growth rate of the trees and thus affect the economic benefits