The cultivation characteristics of autumn spinach in greenhouses is that in the early stage of growth, the greenhouse can be grown without shed film (that is, the open field grows), and the shed film is grown in the greenhouse before the frost, and the harvesting time is in early November. At the same time, it can also be shed for cultivation. The cultivation of autumn spinach in greenhouses has considerable economic benefits and simple management methods.
Variety selection: strong cold resistance, fast growth, high yield and strong disease resistance.
Sweeping the earth: If the sorghum is planted with fruits and vegetables, you can not apply organic fertilizer, only 45% ternary compound fertilizer or 15% suffix. The specific method is to loosen the floor and loosen it twice. If the production of vegetables by Shangyu causes soil deficiency, about 5,000 kilograms of high-quality farmyard manure per acre. Mix the organic fertilizer with the buckwheat, and smooth the kneading dough for planting.
sowing. Sowing is usually carried out from the end of August to the beginning of September. Seeds are evenly sprinkled on the flat surface of the seedlings, the seeding depth is 1 to 1.5 cm, and then stepped on 1 time, stepping on the water. It is best to use a strip. The line spacing is 8 to 10 cm. Generally, about 4 kilograms of pure seeds are planted in acres. If the seed has low purity and impurities, it can be used to remove impurities and sputum seeds, leaving the seeds to be sown, ensuring that the seedlings are neat and strong.
Management after sowing: Before the frost, the greenhouse film is usually buckled in the middle and late September. At this time, the temperature is still high during the daytime. The foot of the shed film should be uncovered during the day and night, and then the temperature will decrease with the outside temperature. The feet were opened and closed at night. When the temperature is lowered again, the foot should be sealed during the day. If you encounter high temperatures in the future, you can open the shed door and the upper air outlet for ventilation. 4 to 5 days after sowing, the seedlings will be released. The soil surface will be watered before the emergence of the seedlings, and the surface will be watered after emergence. In short, we must ensure that the surface of the soil is moist to promote the growth of spinach. The water should be poured once 2 to 3 days before the film is shackled, and it should not be watered until after harvesting. It is very important to prevent and cure downy mildew in the autumn greenhouse. After watering for 2 to 3 days before the greenhouse film is sprayed, it is necessary to spray the agent for preventing downy mildew, such as 72% sulphonic acid cyanide manganese zinc (Kelu) 600 to 800 times. If you find downy mildew after shed, you should use smoke agent to prevent and control. For example, use 10% chlorothalonil smog agent for 300-400 grams per acre, apply once every 7-8 days, and continuously control 2~3 Once, it can effectively inhibit the spread of downy mildew.
Harvest: At the end of October, when the plant height is 20 cm, it can be harvested. By the end of November, the harvest is over, and every 5 square meters of oysters can be harvested by 20-30 kg.
(Danshan)
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