Since the beginning of spring, the temperature has gradually increased and there is more rain. Chinese herbal medicines have begun to sprout and grow, and it is also easy to breed various diseases and insect pests. For these weather characteristics and the growth of Chinese herbal medicines, it is recommended to adopt the following several cultivation and management techniques.
First, ditch drainage. More rainy days in spring, the main ditch and ditch should be emptied in time to prevent accumulation of water, which can easily cause rot and dead seedlings, especially on low-lying land. Ningxiang City, Chinese herbal medicine more than bamboo, Yuzhu most afraid of water, in particular, pay attention to clearing the ditch drain, to do after the rain stopped the ditch no soil surface water.
Second, scientific fertilization. The spring plants began to take root and long leaves, and the roots began to absorb fertilizer. Early fertilization and early crop absorption can promote its growth and development as soon as possible. Fertilization should be dominated by organic fertilizers, which must be fully fermented organic fertilizers. The methods of fertilization include spreading, acupoint application, furrow application and foliar dressing, etc. The specific method adopted shall be determined according to the variety of the Chinese herbal medicine crop, the cultivation method and the size of the crop. For example, Chinese herbal medicines such as Ginkgo biloba, Evodia, Phellodendron, etc. in the wooden undergraduate course should be applied by digging or digging. The amount of organic fertilizer applied should be based on the soil conditions, the fertilizer content of the fertilizer and the growth of Chinese herbal medicine crops. Generally, 500-1500 kg per acre is applied. For the application of organic fertilizers by means of digging or digging, water-soluble compound fertilizers may also be properly added, because the compound fertilizers are effective and can promote the growth of the Chinese medicinal plants as soon as possible. For Chinese herbal medicines (such as Fritillaria, etc.), which are weak in growth and obviously lacking in fertilizers, foliar dressings are used, and the crops can be quickly absorbed and the results are quick.
Third, weeding and weeding. After the beginning of spring, weeds began to breed. Weeding measures should be adopted to eliminate weeds as early as possible, and manual removal is recommended because chemical herbicides can easily harm Chinese herbal medicines and remain in soil and products, affecting product quality. After heavy rain, if the soil is compacted, loose soil should be ploughed in time.
Fourth, to strengthen the prevention and control of pests and diseases. The spring temperature rises, combined with the rain, warm and humid climate environment will easily lead to the occurrence of pests and diseases. For example, Rhizoma Polygonatum is easy to get root rot. In the early stage of disease, 10% hymexazol 200ml can be used to spray water in 1- 2 barrels (about 16 liters per barrel, the same below) or 10% of Guangkuning 100ml in water. 1-- 2 barrels of spray can also be used with high concentrations of thiophanate-methyl, carbendazim and other pesticide sprays. In addition, with 52.5% ketoxime cyanuric (inhibitory net) plus 80% mancozeb of water to irrigation roots also have a good effect. When the disease is severe, it is necessary to promptly remove the root of the seriously ill plant and thoroughly disinfect it with chemicals. The pests of Chinese herbal medicines in Ningxiang City are mainly alfalfa. The hazard is characterized by the larvae feeding on the ground roots, biting off the seedlings and roots, causing the roots to rot and the plants to die. Or eat the underground bark to form a scar. Adult food damages the leaves and it is extremely harmful. Control methods: 1, with 3% diaziphos per acre 2 kg particles mixed soil applicator; 2, per acre with DuPont company's "Home Baofu" granules 4--5 kg ​​mixed soil applicator; 3, with Frequency-type insecticidal lamp traps chafer adults; 4, using trichlorfon and other pesticides mix leaves, bagasse, etc. spread on the soil surface for booby trapping; 5, with 30% fluorescens. Thiamethoxam water irrigation roots; 6 Artificial killing. Usually should be diligent in the inspection and observation, found pests and diseases, should be targeted as soon as possible to take preventive treatment.
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