Do these five points in the field management of Chinese medicinal materials in summer

Summer is the peak season for the growth of Chinese medicinal materials, and it is also the season for high incidence of diseases, insects and weeds. Summer management is the key to the production and planting of Chinese medicinal materials. If it is managed properly to increase production and income, if it is not managed properly, it will not only lead to a substantial reduction in production, but also may result in no harvest. Therefore, the majority of medicinal farmers should strengthen field management of Chinese medicinal materials in summer, and strive to increase production and income of Chinese medicinal materials. The following aspects should be noted:

1. Irrigation

The summer temperature is high, which can easily cause drought. The medicinal material seedling field should be irrigated to keep moisture and cool down. The frequency of irrigation should be determined according to the water demand characteristics of medicinal plants, growth stages, climate, and soil conditions, and should be timely, appropriate, and reasonably irrigated. The time should be selected before 9 am and after 6 pm.

2. Weeding

Intertillage weeding is a regular field management task for medicinal plants. We must hoe and hoe frequently to ensure that there is no weed in the field. Its purpose is to eliminate weeds and reduce nutrient loss; prevent the breeding and spread of pests; loosen the soil, circulate air, and strengthen moisture preservation; early spring intertillage can increase the ground temperature; it can be combined with tillering or cutting off some shallow roots to control plant growth. Intertillage and weeding are generally carried out before the ridge is closed when the soil moisture is low.

3. Top dressing

Combine cultivating and weeding for extra-root topdressing or page spraying. Extra-root topdressing is generally combined with weeding, mainly with urea, 5kg per mu, using the method of hole application. Page spraying fertilizer can use 0.1-0.2% potassium dihydrogen phosphate or Yemianbao and other commercial foliar fertilizers according to the instructions.

4. Drainage

Drainage is an artificial method to remove the water in the soil pores and land area water, improve soil aeration, strengthen the role of aerobic microorganisms in the soil, promote the mineralization of plant residues, and avoid waterlogging. The current summer is the hot and rainy season. After the rain, the ditch should be drained in time to reduce the humidity in the field.

5. Pest control

High temperature and humidity in summer is a period of high incidence of pests and diseases. Elephant aphids, Ligusticum chuanxiong powdery mildew, and single living root rot are all prone to occur. Therefore, we must be vigilant and start prevention and treatment early. It is necessary to strengthen field management methods such as drainage and waterlogging prevention, cultivating and weeding for agricultural prevention and control. After the occurrence of aphids, phoxim can be sprayed to control, powdery mildew can be treated with fenpirin, and root rot can be directly removed.

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