Asarum harvesting and processing
Harvest: Asarum directly seeded with seeds can be harvested in 3-4 years if the density is high. Those transplanted with two-year-old seedlings will be harvested 3-4 years after planting, and those with 3-year-old seedlings will be harvested 2-3 years after cutting. Sometimes in order to collect more seeds, the harvest can be delayed to 5-6 years, but more than 7 years of plant aging is easy to get sick, coupled with dense roots, kink into a plate, inconvenient to harvest. The best harvest time is the middle of September every year.
Processing: remove the sediment after harvest, put it in the shade and dry in a cool place to avoid washing and sunbathing, the leaves turn black and the roots turn white after washing, and the leaves turn yellow after sunbathing, which reduces the smell and affects the quality. It can produce 400 Mu of dry products and 700 kg per mu.
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Control of Asarum's Diseases and Pests
Before emergence of seed in spring, spraying 500 times solution of 70% dixon on bed surface, and after emergence, spraying 500 times solution of 50% carbendazim to control seedling blight. Sclerotinia sclerotiorum mostly occurs in June and July. At the beginning of the disease, brown strip-shaped spots appear at the base of petioles, and after expansion, the aboveground parts lodge and die. in China now The germs spread to the roots. Cover the rhizome with black sclerotia. So that the roots rot and only the root bark remains. Its control method is: early spring in time to loosen the soil, improve the ground temperature, pay attention to drainage; found that the disease plant timely uprooted and destroyed
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Prevention and control of diseases and insect pests of Asarum
The main disease is Sclerotinia sclerotiorum, which is mainly harmful to the root. At the initial stage, the root base was soft rot, white filaments could be seen, and the aboveground leaves gradually turned yellow, lodged and withered. Spray leaves or roots with 50% carbendazim 500 to 1000 times. The main pest is black caterpillar, which usually occurs in the middle and last ten days of June. In order to damage the leaves, all the leaves are eaten up in serious cases. Kill with 1000 times liquid dichlorvos or trichlorfon spray.
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