Motherwort total alkali mollucacide and preparation technique and using method thereof

Abstract

The invention relates to a snail-killing agent of total alkaloid granules in leonurus for perishing Oncomelania and a preparation technique and application method thereof. Fresh whole plant of the leonurus before the stage of full bloom is ground with appropriate amount of water and squeezed into liquor, then centrifugally separated or filtered; and dregs are aqueous-extracted and are filtered for residue removal; supernatant and filtered fluid are decompressed and concentrated to the specific gravity of 1.10 to 1.15, and absorbed by 732 cation exchange resin, then eluted by HCL with the concentration of 5 percent, decolorized and eluted by ethanol with the concentration of 95 percent, decompressed and dried to obtain the dried product of the total alkaloid in leonurus. Aqueous solution with the concentration of 0.60g / L to 1.0g / L prepared by the total alkaloid has obvious snail-killing effect; when the aqueous solution with the concentration of 0.60g / L is used for treating the Oncomelania for 4 to 5 days, the poisoning effect can reach 100 percent. The agent can be added into baits such as sugar powder and flour and then made into granules (the ratio of the total alkaloid in leonurus: the sugar powder: the flour: acacia equals to 1:5:40:5); the granules are bestrewed for 100g per hectare, the mortality of the Oncomelania can reach 100 percent after 3 days. The snail-killing agent of the invention has simple preparation technique, relatively low cost, convenient for storing, transporting and no pollution to the environment and no toxicity to human beings, livestock and fishes.

Description

technical field [0001] The invention relates to a molluscicide granular molluscicide of total base of motherwort used for killing snails, a preparation process and an application method thereof. Background technique [0002] Schistosomiasis is a disease that seriously endangers human health. Oncomelania is an indispensable link in the transmission of schistosomiasis, and mollusc control can effectively reduce the transmission of schistosomiasis. At present, there are roughly three mollusc control methods: artificial mollusc control, chemical drug mollusc control and biological mollusc control. Manual mollusc control is labor-intensive, time-consuming and expensive, and chemical drugs are expensive, have a short validity period, are poisonous to humans, livestock, and fish, and are likely to cause environmental pollution. [0003] In order to avoid the pollution of the environment by chemical drug molluscicides, people always want to obtain pure natural plant molluscicides....

AI Technical Summary

Problems solved by technology

Most of the above-mentioned plant molluscicides use plant powder or a mixture of plant extracts to kill molluscs. The effect cannot be standardized and evaluated, and it is difficult to be recognized internationally.

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