Continuous rainfall and high temperature are important factors restricting the normal growth and development of traditional Chinese medicinal materials in summer. Problems such as poor planting, grass shortages, and serious diseases and insect pests can easily occur, and even large areas of seedlings may die. Therefore, it is necessary to make timely plans based on the types of Chinese medicinal materials planted and the rainfall conditions, and formulate practical and feasible field management techniques for Chinese medicinal materials to ensure the high-quality production increase and sustainability of the Chinese medicinal materials industry.
1. Pay close attention to the weather information released by the meteorological stations in various places, make early warnings before the arrival of heavy rains, and dig drainage ditches in advance to ensure smooth drainage. Medicinal materials that have matured or are close to maturity should be harvested and processed in time to minimize the impact of rainfall.
2. After heavy rainfall, the ditch should be cleared and drained in time to ensure unblocked drainage and reduce possible waterlogging damage. Do a good job of cleaning the flooded leaves when draining, so as to promote the recovery of roots and plants of Chinese medicinal materials as soon as possible. Especially in areas where there are many varieties of roots and rhizomes of Chinese medicinal materials, and the cultivation area is large, long-term accumulation of water can easily cause root rot, reduce production or even fail. Therefore, it is necessary to take all necessary and possible measures at the first time to safely remove stagnant water and reduce waterlogging hazards.
3. It is necessary to cultivate and weed in time, which is another important measure for rainy season management. Summer is a period of rapid growth of Chinese medicinal materials. Some medicinal materials are in a period of simultaneous reproductive growth and vegetative growth. It is a key period for roots to absorb soil nutrients and leaves to produce organic nutrients through photosynthesis. It is also a period for rapid growth of weeds in summer. Therefore, timely intertillage after rain can not only improve soil aeration, break moisture and promote root vitality, but also help improve plant permeability, improve leaf photosynthesis, and reduce nutritional competition between weeds and medicinal materials.
In addition, after heavy rains, if there are severely damaged plots of Chinese medicinal materials with serious dead seedlings and obvious lack of seedlings and ridges, it is necessary to replant or replant medicinal materials with short growth periods as soon as possible according to the waterlogging situation.
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