Rhizoma Polygonatum harvest and processing
Huang Jing can be harvested in spring and autumn, and the quality is good in late autumn and early winter. Remove the impurities of stems, leaves, fibrous roots and sediment after digging, and the grown ones can be divided into 2 or 3 sections, steam in a steamer or wooden retort for about 12 hours, and when they appear oily, take them out to dry or dry (smokeless, light fire is required); or after boiling in water, remove them for drying or drying. However, it is better to use steaming process (cooked yellow essence after steaming, boiled in boiling water and dried in the sun for raw yellow essence).
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Control of diseases and insect pests of Polygonatum polygonatum
The disease has black spot, the leaf appears irregular yellow-brown spot from the leaf tip, so that there is a purplish red edge at the junction of the healthy part, and then the disease spot spreads downward, and the leaf is withered and yellow. Spray with 1000 times of methamphetamine, once every 7 to 10 days, for 2 times in a row.
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Control of diseases and insect pests of Polygonatum polygonatum
The main results are as follows: (1) the occurrence of black spot is more common in spring, summer and autumn. Prevention and control methods: clear the garden during harvest, eliminate the disease and disability, and spray 1-1-100-du liquid in the early stage, once every 7 days, 3 times in a row. (2) the grub harms the larvae, harms the roots, bites off the seedlings or eats the roots of the seedlings, resulting in seedling breakage or root cavity, causing serious harm. Control method: the seed can be mixed with 75% octanoic acid EC according to 0.1% seed quantity, or irrigated with 1000 times of 90% trichlorfon solution during the field occurrence period.
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