1. Appropriate sowing The sowing amount of overwintering spinach varies greatly from region to region. The smaller is 3-4 kilograms per 667 square meters; the larger is more than 10 kilograms per 667 square meters. The amount of sowing affects the cold resistance and yield of the plant. When the amount of sowing is too large, the seedlings are densely packed, the root system development is restricted, the ground part is elongated and yellow, the cold resistance is poor, and the seedling death rate is high. At the same time, the elongated plants bolted and bloomed when they did not grow too large in the second spring, and the yield and quality decreased. When the seeding rate is too small, the leaves will be overspread after emergence, the upper and lower leaves overlap, the light-receiving area will shrink, and the plant growth will be slow. Although the weight of a single plant is larger than that of a dense plant, the total yield is not high due to the small number of plants per unit area. The standard for proper sowing amount is: after emergence, the individual plant has a good light receiving posture, each leaf can fully receive sunlight, the root system is developed, the individual plant can be fully developed, and the population yield is also high. In areas where the average minimum temperature in winter is not lower than -10℃, when the seed quality is high, the sowing period is suitable, the seedlings are not thinned, and the one-time harvesting, the sown amount per 667 square meters should be 4-5 kg; if the sowing time is shorter When harvesting late or in stages, the sowing amount can be increased appropriately. Northeast, Northwest, North China and other regions with severe cold in winter, because the growth of seedlings before winter is small, if the seeding rate is small, the growth of seedlings is sparse, and the soil in the root neck will be exposed and the root neck will be exposed when irrigation "frozen water". Withered, the phenomenon of "dry neck" appears during the winter. Therefore, the general sowing amount is relatively large, 10-12 kg per 667 square meters. 2. In the area where wind barriers are set up, the borders should be east-west, and be made into flat borders with a width of 1.7 meters and a length of about 10 meters. A border should be left every 4-5 space for wind barriers. 3. Seeding techniques There are two seeding methods for spinach: sowing and drilling. In areas where the winter is not too cold and the dead seedlings are not serious during the overwintering period, spreading is generally adopted. According to the local climate during autumn sowing, it can be dry or wet. Dry sowing is to sow the seeds first, then lightly hoe or rake them to make the seeds fall into the soil, then compact to make the seeds close to the soil, and finally water. Wet sowing is also called "drowning sowing", which means watering the bottom water first, spreading a thin layer of fine soil after the water seeps, then spreading the seeds, and finally covering the soil. During the autumn sowing period, dry sowing is often used in areas with a humid climate and more rain; wet sowing can be used in areas with a dry climate and scarce rain during autumn sowing. The wet sowing method can reduce the evaporation of soil moisture because the border surface is covered with a layer of loose soil. The bottom water before sowing is sufficient to meet the water needed for a period of time after seed germination and emergence, thereby reducing the number of irrigation before and after emergence. Prevent soil compaction caused by repeated irrigation. In areas with severe seedling death during severe cold in winter, such as northeast, north China, northwest and other places, in order to make the seed cover thicker and have the same depth, so as to facilitate the cultivation of strong and cold-resistant seedlings, more use the drill method . Ditch the ditch according to the row spacing of 10-15 cm, and the depth of the ditch is 2-3 cm. After the seeds are drilled, they are covered with soil and compacted, and then watered. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone 2-Piece Ostomy pouch MDK-BO-02 300ML
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Seeding technology of spinach over winter