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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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: clean the sediment after harvest, 1 handful of every 2 kg of LMY, put it in a cool place to dry, avoid washing and daily washing.
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Asarum
Asarum also known as fine ginseng, tobacco pot flower. Aristolochia is a family, perennial herbs. For commonly used Chinese medicine. "Shen Nong Ben Cao Jing" is listed as top grade. Because of its fine roots and pungent taste, it is named. Asarum rhizomes bear many slender roots, which are clustered. Rhizome top branches, each branch on the birth of 2 - 3 scales and 1 - 2 leaves with a long handle; scales round, membranous, 7 - 10 mm long, apex obtuse. Petiole 10 - 23 cm long, pubescent or glabrous; leaf blade cordate, 4 - 8 cm long, 5 - 10 cm wide
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