The growth period of spring spinach is relatively short and can be harvested 30 to 50 days after general sowing. Planting spring spinach plays an important role in quickly relieving the spring. 1. Select suitable varieties of spring spinach after sowing seedlings, the temperature is low, sunshine gradually lengthened, easily through the stage of development and convulsions. Therefore, it is necessary to choose late-planting, leafy hypertrophy, high yield, and good quality varieties. Such as late-round Ye Bo, spring and autumn leaves, Liaoning round-leaf spinach. 2. Choose the ground and the soil for cultivation. Choose a neutral, slightly acidic soil with sunny gout, rich fertility, and good water. After the harvest, dig the soil and remove the roots. Every 666.7 square meters of soil preparation will be applied to 3,000 to 4,000 kg of organic fertilizer, and the rammed earth will be leveled and thinned to form a narrow trench to facilitate drainage in rainy days. Generally about 1.2 meters wide. In order to prevent the rain from soaking in the soil, the mulch should be covered with a film before sowing to facilitate sowing. 3. Appropriate sowing, seedling spring spinach in the spring, when the temperature rises above 5 °C can start sowing. Changsha area can be sowed in stages from late February to mid-April, and mid-March is suitable for planting. Generally no seeds need to be sown and sowing seeds and wet seeds can be used. It is also not necessary to pour bottom water before sowing, but instead, soak in a layer of ripe contaminated dung or about 2 centimeters of cover soil after sowing in fine-grained hoe soil on sunny days. The sowing rate is 4 to 5 kg per 666.7 square meters. 4. Cultivation management Spring spinach sowing temperature is low, covering the plastic film early, can be directly covered to the surface, can also be covered with a small arch, is conducive to insulation, promote early emergence. Immediately after the spinach emerges, the film is removed or replaced by a small shed. Also let the spinach seedlings more light, more hardening seedlings. Note that the small arch sheds cover the night cover and the clear cover covers the rain. Select clear days and time to pick up the seedlings, and follow the weather, seedlings timely recovery of fertilizer. In the early stage, the animal manure was applied lightly and diligently, and in the later period, especially 15 days before the harvest, the manure was stopped and the manure was stopped. Nitrogen fertilizer is sufficient, leaf growth is vigorous, and bolting can be delayed, which is conducive to the improvement of yield and quality. However, attention should be paid to controlling the application amount of nitrogen fertilizer so as not to accumulate excessive nitrate in the leaves. During the middle and late stages of the growth of spring spinach, diseases and insect pests are prone to damage due to increased temperature. Diseases and insect pests mainly include locusts, laminae, and downy mildew, etc., and they must be promptly controlled. 5. Harvest spring spinach should be harvested in time according to growth conditions and market demand. Generally should grab the timely harvest before the convulsions, in order to ensure quality and commercial quality. Usually harvested 30 to 50 days after sowing.
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