1, variety selection

Summer spinach, also known as "Vas spinach", is a spinach that was marketed from July to August. Summer spinach should choose a variety of heat-resistant, rapid growth, resistance to convulsions, disease resistance, high yield and good quality. The varieties suitable for summer planting are: Dutch long-term No. 5 spinach F1, K5, Japanese Beifeng, Shaoxing spinach and so on. Secondly, Guangdong round leaf spinach, as well as Nanjing big leaf spinach, Huashang No. 1 can be used.

2, suitable for sowing date

The sowing period can be arranged for more than 50 days before the planned listing. At the same time, it is necessary to arrange as much as possible before the highest temperature in summer, so that the seedlings grow for a period of time and then enter the high temperature period, which is beneficial to obtain higher yield. Therefore, the suitable sowing date for summer spinach is mid-June.

3, soaking seeds and germination

Summer spinach must be soaked in germination before sowing. The method is as follows: soaking in well water for 24 to 30 hours, wrapping with gauze, hanging in the water well about 20 cm from the water surface, sinking the gauze into the water every day, washing the seeds once, and germination after 2 to 3 days. . The soaked seeds can also be spread in the cool place of the room to germination, pay attention to flipping and maintain a certain amount of water, and can also sprout after 5 to 6 days. Or the immersed seeds are germinated at 15 ° C ~ 20 ° C, and can be germinated within 3 to 4 days.

4. Soil preparation and fertilization

Before arable land, 2000-3000 kg of decomposed farmyard manure, 20 kg of three-element compound fertilizer and 10 kg of urea were applied per 667 square meters. It is also necessary to apply 1.5 kg of zinc fertilizer and 0.7 kg of boron fertilizer as base fertilizer. Shallow tillage, made of 1.1 meters wide flat 畦 (including 埂), the 畦 surface must be flat, 畦 not too long, about 15 meters is appropriate. Before 10 am, after 4 pm, wewed with wet sowing method. That is, first watering, after the water seeps, sprinkle the seeds, covering 1.5 to 2 cm of fine soil. In order to ensure sufficient seedlings, the seeding rate per 667 square meters can be increased to 8-10 kg. After sowing, it is used as a straw covering the surface, cooling and moisturizing, preventing rain and scouring, and ensuring uniform seedlings. The cover is removed in the evening or in the morning after emergence.

5, field management

Inter-Miao: After emergence, the seedlings should be carried out in places where the emergence is too dense.

Watering: Watering for the first time, the water flow should be slow, and the amount of water should be small, so as to prevent the mud from soaking the cotyledons and causing dead seedlings. Generally, water is poured once every 5 to 7 days, and the soil is often kept moist to reduce the ground temperature. Watering time should be placed in the morning or evening, water wells should be poured, and pond water and river water should not be poured.

Prevention and control of pests and diseases: The main diseases of summer spinach are rickets, downy mildew, anthracnose and viral diseases.

Prevention and treatment method of squatting disease: After the spinach is emerged, the ground and the plants can be sprayed with 3,000 times of the green hen 1 or 1500 times of the gram. If the incidence is heavier, 72.2% Plex 600 times solution plus 68.75% Du Bang Yi Bao 1000 times liquid spray can be used.

Downy mildew prevention and treatment method: can spray 72% manganese zinc cream urea 600 times, or 58% metalaxyl WP 500 times liquid, or 64% antivirus 矾 manganese zinc wettable powder 500 times liquid, or 40% ethyl aluminum phosphate The wettable powder is 200 times liquid, and it is sprayed twice alternately every 7 days.

Anthracnose prevention and treatment method: use 70% methyl thiophanate 1000 times solution, or 50% carbendazim WP 600 times solution, or 70% mancozeb WP 500 times solution, spray alternately every 7 days ~3 times. It is best to combine the control according to different drug characteristics.

Virus disease prevention and control methods: eliminate aphids early and reduce the chance of infection. You can spray cockroaches 2000 times or 毖nike 1000 times with imidacloprid to kill aphids.

For the leaf miner pests, it can be sprayed with a babysitter 500-1000 times, Baidai 1000 times liquid, or 90% trichlorfon crystal 1000 times liquid.

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