First, the cultivation of facilities in summer and autumn high temperature and rain, spinach is easy to get virus disease, should be shade and rain shelter cultivation. One is to use a greenhouse or arch shed with old membranes not yet removed, and to cover the greenhouse film with a shade net with a light transmittance of 60%-70%, which can significantly reduce the temperature inside the greenhouse. The second is to add pest control nets, and seal pest control nets around greenhouses or sheds. This will not affect ventilation, and it can safely isolate locusts and other transmission media. The shed film should also be inspected and promptly repaired to prevent rainwater from entering the shed and causing viral diseases. Second, the choice of varieties of ordinary spinach varieties are not cold and heat-resistant, the temperature is more than 25 °C that is poor growth, poor quality. In the summer and autumn, the varieties with drought resistance, heat resistance, and rapid growth should be selected. Generally, high-temperature varieties introduced from the Netherlands are used. Third, soaking seed germination sowing is suitable from May to September, is in the hot season. Seeds must be germinated at low temperature before sowing, by soaking the seeds in deep wells for 1-2 hours. After the seeds are fully absorbed, they are wrapped in gauze and suspended with ropes in the deep well about 1 meter away from the water. Pay attention to the daily washing. 3-4 days after the seeds can be sown. Fourth, ridging planting In summer and autumn, cultivation is most afraid of moisture, such as stalk rot easily cultivated in sorghum, cultivating the base of the leaves in the ridge is well ventilated, not easy to get sick. Before sowing, the land should be deeply plowed, flattened, and plowed. The prying depth should be 1.2-1.5 meters. Every 0.5 meters starts from a ridge, and the ridge height is 15 centimeters, and 2 lines per ridge. A hole is seeded every 5 centimeters, 2 seeds per hole, and 0.8-1 kilograms per mu. V. Field management 1. Fertilizer management Spinach likes fertile, moist, neutral-alkali-alkali soils with high humus content. Therefore, organic fertilizer must be re-applied. General mu with decomposed organic fertilizer 1,000-1500 kilograms, if the soil acid, can be sprinkled lime 20-30 kilograms per acre. Immediately after the spinach grows out of the true leaves, it will be poured with a light stool. Afterwards, with the growth of the plants, the topdressing concentration will be gradually increased. However, it should be applied when the soil is dry to prevent the soil from growing wet and causing diseases. Fertilization should pay attention to the principles of light application, diligence, and early lightening. In the early stage, more organic manure was used, that is, manure was decomposed, especially the manure was stopped 15 days before harvest, and it entered into the growth stage at a later stage. The urea should be topdressed 2-3 times in stages, applying 5-10 kilograms per acre and promoting leaves. Cluster growth, increase production, improve quality. 2. Facilities Management Summer and autumn spinach cultivation should be taken in a rain-free cultivation. After growing the real leaves, pest control nets should be used to prevent insects. After the two true leaves cover the shade nets, the shade nets are removed 15 days before harvest to reduce the nitrate content of the products. And avoid plant leggy. VI. Pest control As a result of adopting net yarn pest control, it is mainly used to prevent and control diseases in the growing stage of spinach. It can be used to sow 48 times of 500% of Lethbene or 90% of trichlorfon crystals 1000 times before sowing. Summer spinach is easy to get stalk rot, anthrax, downy mildew and virus diseases, etc., can be used Dasheng, carbendazim, thiophanate-methyl, etc. spray 7 times a day to prevent in advance. If diseases occur, stalk rot may be treated with carbendazim and thiophanate-methyl, anthrax may be treated with mancozeb, and scavenger may be used for control. Downy mildew may be treated with Ank manganese zinc, glucosyl, antivirus, and viral diseases. Disease, virus a, virus k control. Insect pests such as Liriomyza sativae, crickets, locusts, etc., can be controlled by chemicals such as Lethbone, Insecticide, and Imidacloprid. No more than 2 doses of each agent were taken during the entire growth period and they were stopped 7 days before harvest. Seventy, timely harvest 40-50 days after the general broadcast, spinach grows to 20-30 centimeters high when the timely harvest market, rather sooner rather than later. When harvesting, the yellow leaves should be removed, washed with clean water, and tied into 250-500 g/bar; the average mu yield can reach 1500 kg.
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