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First, scientific basis
Everyone knows that the growth of any plant can not be separated from sunlight, temperature, moisture, and carbon dioxide. Sunshine and temperature are external factors, and water and carbon dioxide can be supplemented by artificial means. Carbohydrates are the basic ingredients of organic substances, accounting for more than 96% of the entire green plant body. Therefore, the carbon source (organic carbon source) is artificially added to the greenhouse, which is very beneficial to the growth and development of melon plants. According to reliable data, 4 kg of carbon dioxide can be released per kilogram of straw (straw), which can effectively compensate for the shortage of carbon dioxide supply in greenhouses, and promote the growth of fruits and fruits in the deep winter season.
Second, specific management measures
1. First, dig out the east-west direction of the inside of the shed body and dig 15-20 cm in depth and 10-15 cm in width, and fill 10-15 cm of crushed straw (or straw) in it. better. Then cover the surface with about 5 cm of soil and irrigate it after compaction. This will not only help protect the shed front temperature, but also help to supplement the carbon dioxide in the shed. Some rapeseed and coriander leaf vegetables can also be cultivated at this site.
2. No matter cultivated cucumbers, eggplants, cantaloupes and other fruits need ridging cultivation, large ridges should be deep, small ditch should be shallow, it is necessary to compact ridge soil, it is best to use ditch irrigation dark cast, full shed film cover. Every 5 to 5 ditch in Dagou is covered with a 5 cm thick line of wheat straw. After appropriate amount of biological bacterial fertilizer is applied, it is covered with plastic film. However, it is necessary to leave gaps so that the carbon dioxide produced by biological fermentation can be discharged into the shed.
3. Disease prevention and pest management: In recent years, the pollution-free cultivation of vegetables has become more and more stringent. It can be planted by transplanting bio-organic fertilizer before planting and transplanting, and the seedlings can be planted in water. The short-term seedling stage should be shortened. Water fertilization, chasing sulfur-potassium compound fertilizer on the ditch side covered with wheat straw. Can effectively reduce the root rot, burning root and other diseases, and promote the roots and more strong. 7-10 days of seedling spraying once Tianda 2116 plus hymexazol for 2 to 3 consecutive times to prevent seedling disease. During the entire growth period of the fruits and vegetables, the healthy plants were cultivated, and the guava fruit Tianda 2116 plus Tianda acetamiprid was used to prevent the white worm and maggots of the greenhouse. For other pests, avermectin, diflubenzuron and tebufenac were selected. Biochemical pesticides were sprayed alternately. For example, wheat straw, raw chicken manure and pig manure can be used to spray poisonous insecticides under the plastic film when they are not fully ripened and sterilized. In addition, we must control the temperature and humidity, not only to prevent the temperature of the greenhouse too low to affect the ground temperature; but also to prevent the greenhouse temperature is too high caused by falling flowers and falling leaves. Ditch-lined wheatgrass also has a good effect in maintaining ground temperature and preventing cold damage.
4. Yield effect: generally can increase eggplant 10% to 20%, cucumber 30% to 50%, cantaloupe 20% to 30%, input-output ratio is very impressive.
Deep-winter wheat-grass seeds are good
Every winter season, warm winter sheds cultivate cucumbers, eggplants, cantaloupes and other melons and fruits. Affected by snow and rain, they often cause poor lighting, low greenhouse temperatures, low ground temperature, and insufficient supply of carbon dioxide in the greenhouse, directly affecting plant growth and appearance. And fruit production. Apart from paying attention to the strengthening of warming and supplementing light measures, scientific coverage of wheatgrass in the canopy is also a good technique, which will greatly improve the photosynthetic efficiency of plants. Its scientific basis and management measures are as follows: