The origin of spinach is Persian, so it is also called Persian. Autumn is a good season for growing spinach. Spinach is mainly cultivated by live broadcast. This article mainly introduces spinach fertilizer and water management, pest control and weeding technology.
Spinach cultivation should choose loose and fertile, water and fertilizer, well irrigation and drainage conditions, slightly acidic loam, PH value 5.5-7. When the whole land is mulched, the organic fertilizer is 4,000 kg, the superphosphate is 40 kg, and the leveling is fine. The winter and spring should be sorghum, and the summer and autumn should be flat. The width is 1.2-1.5 m.
Sowing in the early autumn of the Yangtze River Basin, generally from late August to early September, harvested in batches 30 to 40 days after sowing. It can also be planted early in July or late in mid-September. If planting is carried out from late October to early November, it will be harvested in the next spring. Spring sowing is generally sown in February-April, but it is suitable for sowing in mid-March and harvested 30-50 days after sowing. Spinach cultivation techniques and disease prevention
How to germination sowing?
Sowing seeds before the beginning of September should be soaked and germinated. The method is to first soak for 12 hours with normal temperature water, 24 hours after 4 degrees, and then germination at 20-25 degrees. Or soak the seeds after soaking in the water surface to germination, after 3 to 5 days, the seeds can be germinated. In the first ten days of September, the sowing people do not have to soak seeds and germination. The amount of seed varies depending on the cultivation area, cultivation season, and harvesting method. Generally, 5 to 7 kg per acre is used for autumn, and 3 to 4 kg for spring sowing. In high temperature seasons, severe winter areas, and multiple harvesters, the amount of seeds used should be increased. Seeding methods are often used for sowing and seeding. The spreader asked for uniform seeding, and after sowing, use the gums to simmer for one time to make the seeds into the soil. In the early autumn, the sows, in order to prevent high temperature and heavy rain, can cover the sunshade net after sowing, and protect the seedlings in the early stage. Spinach cultivation techniques and disease prevention
How to topdress?
Autumn spinach has high temperature in the early stage of growth and is easy to be arid. It can be combined with fertilizer and water. It is advisable to use 20%~40% of manure and manure. Wintering spinach should be applied to the fertilizer before the spring warm. The spinach harvested in several times is topdressed in time after each harvest. Pay attention to nitrogen control to prevent excessive accumulation of nitrate and nitrite in spinach. Spinach cultivation techniques and disease prevention
How to prevent pests and diseases?
The main pests are downy mildew, anthracnose and spinach leaf miner. Downy mildew is sprayed with 25% metalaxyl WP 800-1000 liquid once, with a safety interval of 10 days. The anthracnose was sprayed once with 25% carbendazim WP 700 times, and the safety interval was 10 days. The leaf miner is sprayed once with 2.5% deltamethrin emulsifiable concentrate 300~600 ml/mu, and the safety interval is 7 days. 8. How to harvest? Autumn spinach harvested 30 days after sowing, once every 20 days, a total of 2 to 3 times. The early broadcasters will produce about 1,250 kilograms per mu, the late broadcasters will be about 2,000 kilograms, and the winterers will be about 2,500 kilograms. Spring spinach is usually harvested at one time, with an output of 1,250 kg per mu.
Due to its longer time from planting to emergence and slower growth, the early weeds are more harmful. The control strategy should first consider the use of broad-spectrum pre-emergence herbicides for soil treatment before seedlings of spinach.
Pre-emergence weed control technology after sowing:
After planting the soil, it should be planted, covered with seeds and sprayed in time. The following day: 960 g / liter of purified metolachlor EC, 75-100 ml per 667 square meters; 90% grass emulsified milk, every 667 square meters The dosage is 125-150 ml; 50% butachlor EC, 125-150 ml per 667 square meters; 48% zhongdingling EC, 150-200 ml per 667 square meters. 40 to 50 liters of water, evenly spray the soil surface.
Matters needing attention: 1 spinach seedlings after sowing time is longer, should be used in time after sowing. 2 The soil moisture level is related to the effect of weed control, so the amount of water to be treated should be determined according to the soil moisture. Although the herbicidal effect of dimethoprim is good, it has a significant effect on the emergence and growth of spinach. It is strictly forbidden to use.
Weed control technology for growing period:
Fields that have not been used before seeding after sowing can be used in the growing season of spinach. Control the annual grass, optional: 5% fine quizalofol EC, every 667 flat
The dosage of square rice is 50-60 ml; 150 g/L of flurazepam emulsifiable concentrate, 40-60 ml per 667 square meters; 69 g/l of oxazolyl-grass emulsifiable concentrate,
50 to 60 ml per 667 square meters; 12.5% ​​enephidine EC, 50 to 75 ml per 667 square meters; 120 g / liter of ketene EC, per 667
Square rice dosage 30 ~ 40 ml; 108 g / liter of high-efficiency flupirtine, 20 ~ 40 ml per 667 square meters. 30 to 40 liters of water, evenly weed.
For the prevention of annual broadleaf grass, 160g/L beet Ning emulsifiable concentrate can be used in the 4-6 leaf stage of spinach and 3~5 leaf stage of broadleaf grass, and the dosage is 200-300 ml per 667 square meters.
30 to 40 liters of water, evenly weed.
Matters needing attention: the use of beetroot in the growth period of spinach to prevent the broadleaf grass should not be too early, otherwise the growth of spinach will be inhibited.
After the spinach is planted, it is necessary to do a good job in pest control, fertilizer management and weeding work to meet the nutritional needs and space of spinach growth and development.
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