Medicinal cultivation
Biological characteristics: shade-tolerant, shaded environment is appropriate. If the light is too strong and the temperature is high, the seedlings are very likely to die. Red purple soil was selected as the cultivation area.
Cultivation techniques: seed propagation, seedling transplanting method. Select a sloped, wet sandy loam for the seedbed. Deep-turning fine sorghum for sorghum, 畦 width 70cm, indefinite length. After ripening the fruit in mid-June, it was timely harvested, dried, and the shell was removed after cracking and sown in early July. Spread, cover fine soil about 1.5cm, scaffolding shade. When the seedling age is about 60 days, 5-6 leaves of true leaves are transplanted, and the plant spacing is 20cmX7cm.
Field management: Shed the arbours promptly after transplanting. Shed height is 1.6-2m and shading is about 30%. The lack of seedlings needs timely replanting and diligent weeding. After transplanting, apply 1 root fertilizer and apply 1 fertilizer after turning green. Every year after the return of green, top dressing is performed once. After returning to the seedlings, shallow ploughing is performed once. Pay attention to soil during the growth period to prevent root exposure.
Pest control: (1) Bletilla striata is the root cause of tuberculosis, and it is most prosperous in the high-temperature and high-humidity seasons. Control methods: remove the diseased plants in time and destroy them. The diseased points are disinfected with lime. Prevent accumulation of water in the rainy season. Rotation with grass crops. (2) Aristolochia papilio larvae eat leaves and stems from late July to late October and can be sprayed with 90% trichlorfon 500-800 times to control. The phlegm began in early October and can be captured manually. (3) The larvae of P. striata are sporadic and the control method is the same as that of P. aristolochia. (4) The entire growth period of the Xenopus laevis occurs, with the heaviest damage from April to April until returning to the seedlings. Spray 20% amitraz 1000 times or 73% Keziite 3000 times to control. There are also locusts.
Plant extracts refer to substances extracted or processed from plants (all or a part of plants) using appropriate solvents or methods, and can be used in the pharmaceutical industry, food industry, daily chemical industry and other industries.
There is a conceptual overlap between plant extracts and herbal extracts. The raw materials of plant extracts in my country are mainly derived from Chinese herbal medicines, so domestic plant extracts can also be called Chinese medicine extracts to some extent.
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