Spinach is not resistant to strong light and high temperature how to grow spinach out of season over summer

Spinach likes cold and cool, and is not resistant to high temperature and strong light. It is difficult for spinach to grow normally when the temperature is higher than 25 ℃. Therefore, effective techniques should be adopted for off-season cultivation of spinach in summer, and the economic benefit is high.

Spinach

First, select suitable varieties

Heat-resistant varieties can be selected, and spinach of heat-resistant varieties can still grow normally at a high temperature of about 30 ℃, producing 1500-2000 kg of spinach per mu.

Second, soaking seeds to accelerate germination

When the temperature reaches 30 ℃, it is very difficult for spinach seeds to germinate. The method is to soak the spinach seeds in deep well water for 1-2 hours. after the spinach seeds absorb enough water, wrap them with a towel and hang them in the well with a rope, about 1 meter from the water surface. Wash it once every morning and evening. After 3-4 days, the seeds were sown when the seeds were white.

3. Soil preparation and sowing

Apply enough fertilizer, turn and rake and make the bed. Row spacing 15cm, deep 2cm shallow trench, spinach seeds are evenly sown in the ditch, plant spacing 5 (single sowing) to 10cm (double sowing), covering soil 1.5-2cm. Water after sowing. After 8-10 days, pour water once, and then water 2-3 times according to the situation.

Fourth, shelter from the sun and prevent rain

Because spinach is not resistant to strong light and high temperature, shading and cooling are needed in summer to ensure normal growth.

V. Prevention and control of diseases and insect pests

Spinach is susceptible to downy mildew, anthracnose, spot disease and virus in summer. Downy mildew can be controlled with 64% disinfectant alum wettable powder 500 times. Anthrax can be controlled with 50% carbendazim wettable powder 700 times or 80% anthrax Fumei wettable powder 800 times. Spot disease can be controlled with 36% thiophanate methyl suspension 500 times or 40% polysulfide suspension 600 times. The virus disease was prevented and treated with 1.5% Zhishiling emulsion 1000 times.