After sowing, due to severe drought, soil loss or rain, low temperature, rotten seeds, disease, insects, grass and other hazards, the spring sowing of medicinal materials can easily cause the drug field lack of seedlings broken ridge strips, if not take effective remedial measures in time, will directly affect the field The stable production and high yield of medicinal materials and the planting efficiency of growers. Therefore, it is necessary to take corresponding remedial measures according to different circumstances in order to reduce losses. Now introduce some practical remedial experience for the reference of drug farmers.
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Transplanting seedlings such as drug seedlings just emerged from the true leaves, and when the field was about 30 percent short of seedlings, the seedlings could be planted on the spot to make up the plant. When transplanting, as little as possible to hurt the seedling roots, pouring enough water, cover the soil; if the seedling age has reached 2 true leaves, field seedlings less than 20%, can be dug in the lack of seedling depth, width 15 ~ The 20-cm seedling pit was filled with water, and then the seedlings were transplanted with soil and ditches. When transplanting, as long as the soil is not scattered and buried, it can be transplanted to survive. However, the transplanted seedlings should be supplemented with fertilizer water after transplanting to promote the healthy development of individuals.
Transplanting young crops to the seedlings that are incompletely emerged and the ridges and ridges are absent are treated with seedlings and transplanted to make up the whole seedlings. In places close to the water source, the well-treated and germinated seeds are uniformly sowed in nursery beds, covered with soil, slightly repressed, and irrigated with water, covered with rice straw, and moistened and moisturized. Generally, about 10 days, the medicinal species can emerge, and the rice is removed. Wheat straw, to strengthen the seedbed management, seedling height 8 ~ 15 cm can be transplanted with soil. In order to improve the inherent resilience of the drug seedlings, a few days before transplanting, in addition to paying attention to simmering seedlings, the drug seedlings must be fed with fertilizers, belts, and drugs, and must be applied 5 to 6 days before transplanting. 1000 kg of clear manure or 5 kg of urea is poured into water, so that the force is not colored. When arid areas are transplanted, they can survive if they are exposed for two days. Where appropriate, watering the seedlings can be appropriate.
Note: Whether transplanting seedlings or transplanting seedlings, we must pay attention not to hurt the roots and growth points of the seedlings; in order to avoid reducing the survival rate and the emergence of inferior medicines. In addition, during transplanting seasons such as in dry weather, the roots of transplanting medicine seedlings have serious water loss, and whether or not they can fully inject water to live trees at one time is to promote early awakening, early growth, increase the survival rate, and reduce the lack of monopoly seedlings. The essential. Early transplanting temperature is low, evaporation is small, generally about 2500 kilograms per acre watering, the temperature of transplanting medium and late rice dumplings is high, there are many leaves of medicinal seedlings, and the water requirement is large. Generally, it needs watering 4000-5000 kilograms per acre.
If a small amount of seedlings are found in the seedlings of Miao Dingzao, and when the seedlings are replanted and transplanted late, the seedlings may be left to remain, the seedlings may be selected, the two strains may be left in one pond, and two ) Or keep two plants in each of the adjacent ponds and maintain a reasonable number of plants.
Prevent weeds from harming the field If the seedlings are not cultivated and weeded in time, and the management is extensive, the weeds can spread widely in the intercropping areas and spread quickly. The damage is severe and the grasses are prone to occur, seriously affecting the growth and development of the seedlings, and even causing the deforestation of the seedlings. huge loss. Where conditions permit, weeds should be used for comprehensive control of weeds in weeds to eliminate weeds in the bud or seedling stage. Agricultural control, mechanical control, biological weed control, plant quarantine, chemical weed control, and weeding and other comprehensive control measures were adopted to control the growth and damage of weeds in the field.
Although the seedlings of top dressing and seedlings need less fertilizer, they are very sensitive to fertilizers. Late seedlings, weak seedlings, and slow-moving seedlings can be quickly used to raise seedlings earlier, which can speed up their stand-up and promote early-onset growth so that the seedlings can grow in a balanced manner and remain strong but not degraded, so as to expand the group. Generally apply urea 5 ~ 7.5 kg (or thin excrement water) per mu. When dressing fertilizer, it is necessary to apply less seedlings, apply more seedlings, apply weak seedlings on both sides, and turn the seedlings and plants growing on a large number of plants. It is better to catch water after drought. However, in general high-yield fields, base fertilizers, and planted fertilizers may not be used for raising seedlings. At the same time, timely application of phosphate fertilizer can promote drug seedlings early delivery, early rooting, speed up the process of plant growth, and it is beneficial to cultivate strong seedlings and increase yield. Generally apply 10 ~ 15 kg of superphosphate per acre, soaked for a day and a half, and then poured into the water, the effect of top-dressing seedlings and seedlings is more obvious.
For especially arid regions, drought protection is one of the key measures to win over the whole seedlings of Yaotian, which can reduce the evaporation of water, and can be covered with plastic film in places where conditions permit, and it can reduce the amount of ground evaporation and the interface of soil in the sowing layer. Lee seed germination seedlings. In areas with high rainfall, special attention should be paid to clearing the ditch, middle ditch, and ditch in the Yaotian. The ditch and the middle ditch should be deeper than the ditch, and should be opened to the bottom of the plow to facilitate drainage, reduce the groundwater level, and make medicines. Tian Yu stopped drying. In addition, as far as possible to grow into pieces, in order to prevent the field of water seepage into the medicine field, resulting in wet damage, not due to waterlogging and loss of seedlings and reduce production. If rain falls after the sowing of the medicinal herbs, the soil should be promptly grasped after the rain when the soil moisture is suitable. The top soil compaction will be broken and the loose soil will increase the ground temperature. 