Mung bean is a common small grain, the market demand is large, but the variety is mixed and the quality is poor. Doing a good job in the retention of mung bean can not only increase the output, but also ensure the quality of mung bean production, and the economic benefits are high, which is worth promoting in all regions. Mung bean seedlings should select good varieties, and introduce and promote good varieties with strong resistance, or excellent local varieties. Timely sowing, strengthen management. Mung bean is a warm daylight crop with short days. The minimum temperature for seed germination should not be lower than 8°C, and the optimum temperature is 25°C. Therefore, sowing should not be too early. It is slightly later than Daejeon crops. Generally, it is sown from May 15 to May 25. Most suitable. In order to meet the demand for nutrients during the whole growth period of mung bean, in addition to the application of base fertilizer, it is also necessary to top-dress fertilizer in time to prevent falling flowers and plants, and to prevent and treat diseases and insect pests in time. Two listings are reserved. It should be selected twice in the field according to the typical traits of the original variety: for the first time in the flowering and poding period of mung bean, based on the traits, the excellent individuals with strong growth, good plant shape, moderate pods, lodging resistance, and strong resistance to pests and diseases will be selected. Listed; the second time within 3 to 5 days before mung bean maturation, on the basis of the first choice, the choice of maturity, high yield, resistance to lodging, resistance to stress and resistance to blasting, and selection of single plants . The selected excellent plants must be timely harvested, transported and stored in ventilated and dry place for 2 to 3 days after threshing, in addition to net impurities, bagged and preserved. One-time selection method. In the case that the amount of seeds used is small, the plants can be selected in a field with high yield and traits within 4 to 5 days before maturity of the mung bean. The plants are robust, the branches and pods are moderate, the seed setting rate is high, the maturity is the same, and the grain is full and resistant. Lodging, anti-fried clams and strong resistance to pests and diseases, with the characteristics of the original varieties of good single plant listing, bundled into bundles after drying in a ventilated and dry place for 2 to 3 days, then threshing, removal of impurities, single-package storage, for With this method, this method saves time and effort. As the mungbean pods are easy to explode after ripening, they must be harvested in time, and the signs must be carefully checked when harvesting. The signs are not clear and cannot be mixed together to ensure purity. During the preservation of the seeds, care should be taken to prevent moisture, heat, pests and rodents, and to check them regularly to ensure the quality of the seeds.

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