Calcium cyanamide used for killing schistosome ovum

Abstract

The invention involves a pesticide, particularly relates to using mixture of calcium cyanamide or calcium cyanamide and calcium oxide for killing schistosome ovum. The invention has good effect for killing schistosome ovum, blocks the growth chain of schistosome from the sources without environmental pollution, increases the fertilizer efficiency of animal and human excreta, while the calcium cyanamide is decomposed completely in the water without residues, and does not impact environment and aquatic organism in pound and lake. When the animal and human excreta containing calcium cyanamide is used as fertilizer, the fertilizer efficiency and nitrogen content are improved efficiently, so while killing maggots with calcium cyanamide, the nitrogen fertilizer is supplied, the product is economical and environmental friendly, has good economical effect.

Description

technical field [0001] The invention relates to an insecticide, in particular calcium cyanamide or calcium cyanamide and calcium oxide is used to kill schistosome eggs. Background technique [0002] The life cycle of schistosomiasis includes six stages: adult, egg, miracidium, sporidia, cercariae and juvenile worm. Humans or other mammals infected with schistosomiasis excrete eggs from feces. If the feces contaminate water, the eggs are carried into the water, where miracidia hatch. Miracidia can swim freely in the water, and actively drill into the snails in the water, develop into mother sporidia, carry out asexual reproduction, and produce sporozoites. The sporozoites reproduce again to produce a large number of cercariae, and the cercariae leave the snails and swim freely in the water. In the life history of schistosomiasis, there are two hosts, one is humans and other mammals parasitized by adults, which is called the final host, and many mammals can become the final ...

AI Technical Summary

Problems solved by technology

…Using drugs to kill molluscs will also pollute the soil and water quality in a large area, and is highly toxic to fish and other aquatic animals and plants. Some ingredients enter the human body with edible aquatic animals and plants and can become cancer mutagens. It is relatively dangerous to use a large number of molluscicides without a scientific tracking and evaluation system.”