At present, the spring sowing of herbs has entered the mid-term management, and the summer sowing of herbs has also begun. How to do a good job in field management of these medicinal herbs? Please see the experts' suggestions:

First, the seedlings of the seedlings and Dingmiao Chinese herbs have inconsistent maturity, and the sowing time often increases the seeding rate. Therefore, it is easy to cause the emergence of seedlings with high density and must be seedlings with time. It takes 3-5 days after the cotyledon is unearthed to remove dense, thin and diseased seedlings. Seedlings grow to about 10 cm, set seedlings in time, and the seedling density depends on the variety and seedling growth. Flexible cultivation is the key to increase production.

Second, the cultivator soil and weed cultivator can loosen the soil, eliminate weeds, increase soil permeability, such as yuanshen, yellow and other full growth period requires multiple cultivators. Soil can protect the bud head, increase the temperature, which is conducive to the expansion of tubers and tubers, such as Yuanshen and Pinellia. The control of weeds in medicinal fields is a daunting task, and weeding must be performed several times due to weak seedling growth and long growth times.

Third, the growth and development of Chinese herbal medicine fertilization needs a variety of nutrients, nitrogen, phosphorus, potassium and three elements need a large amount of different types of fertilizers are also different rules. The general principle of fertilization is: 1-2 years old and all herbs, seedling stage should be more nitrogenous fertilizer, to promote the growth of stems, in the middle and late topdressing phosphorus, potash fertilizer; perennial and root and underground stem herbs, to apply when the site preparation For organic fertilizers, it is necessary to chase the fertilizer three times during the growth period. After germinating in the spring for the first time, during the flower bud differentiation period the second time, before the third flowering effect, wintering fertilizer is applied again before going into sleep in the winter.

IV. Irrigation and Drainage Traditional Chinese herbal medicines require less water in the early and late stages of fertility, and have a strong growth during the mid-fertility period. They require more water. The critical period of water demand is mostly before and after flowering, but there are differences in different types. Melon in the flowering mature stage, grasses such as glutinous in the jointing stage, and yellow peony in the seedling stage. Drought-resistant Chinese herbal medicines include Anemarrhena, Glycyrrhiza, Safflower, and Astragalus. Timely irrigation can greatly increase yield. Roots of medicinal herbs are not well developed at the seedling stage, and they are most vulnerable to drought. They must be poured with water and keep the soil moist. Roots and roots of medicinal herbs, most afraid of field water and soil moisture. The water in the soil is less watery and less, the roots breathe less, affecting fertility, and it is easy to die. Therefore, we must pay attention to field drainage in the rainy season.

Fifth, plant shape adjustment can artificially adjust the growth and development speed, improve field permeability, make the plant robust and robust, by inhibiting the growth of invalid organs, and promote the development and growth of commodity parts and improve quality. The adjustment of herbaceous plants mainly includes topping, snoring, bud removal, leaf picking, and root repair. Woody class has plastic surgery and trimming. Growth regulators can also be applied on medicinal materials, which can prolong the life of stems and leaves on the ground, promote the growth of underground roots and stems, break the dormancy of seeds, and regulate the growth of flower buds.

Sixth, other management measures Chinese herbal medicines that are overcast should not be exposed to strong light and should be shaded by shelters, such as ginseng, American ginseng, etc., or planted with high-stalked crops, such as Arjuna, which can interplant corn shade. Climbers, vines and sprawl such as yam, codonopsis, and mirrows need scaffolding. Adjusting the sowing date and scientific management of fertilizer and water can cultivate healthy individuals and increase plant resistance.

VII. Diseases and Insect Pests Prevention Diseases of the leaves include downy mildew, powdery mildew, rust, leaf spot, leaf blight, and viral diseases; root rot, white peony disease, and nematode disease are the diseases that damage the roots; Diseases include blight, blight, and sclerotia; diseases that damage fruits and seeds include black fruit disease and black ear. Insect pests mainly include underground pests, aphids, leafhoppers, and lepidopteran larvae. The general principles for the prevention and control of diseases and pests of Chinese medicinal materials are: prevention-oriented, comprehensive prevention and control, selection of low-toxicity, low-residue pesticides, promotion of biological control technologies, and prohibition of the use of highly toxic and long-acting pesticides.

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