Today we are going to learn to study the intensive seedling technology of vegetable greenhouses. The advantages of this technology are saving seed consumption, facilitating management, tidy seedlings, promoting vegetable maturity and increasing income. A vegetable farmer who needs it can learn more. 1. Choose the appropriate substrate and tray The substrate is prepared by mixing peat and vermiculite in a ratio of 2:1. The substrate is pulverized and sieved. When used, 2.5 to 3.0 kg of nitrogen, phosphorus and potassium ternary compound fertilizer is added per cubic meter of the matrix, and a prepared special matrix can also be directly purchased. The tray can be selected according to the seedling characteristics of different vegetables. For example, cucumber or watermelon can be used with 50-hole or 72-hole trays. For tomatoes and eggplants, 72-hole trays can be used. For green peppers and medium-bred cabbage, 128-hole trays can be used. For celery, 288 holes are generally used. 392 holes, rapeseed, lettuce, generally use 288 holes. 2. Substrate loading and sowing Before using the plug tray, the residual matrix in the plug should be removed first, then rinsed with water, dried, and then placed in a closed room. The sulfur powder and sawdust are mixed and ignited to sterilize. For manual sowing, the seedling substrate should be placed in the tray, the excess substrate should be scraped off, and then one deep hole should be punched at each hole, and the dried seeds should be broadcast live. After sowing a single hole, cover the soil with a fine vermiculite, spray it with a watering can and place it in the germination chamber to germination. After the buds are unearthed, the seedling trays are placed on the bed of the nursery greenhouse. 3. Supporting facilities for nursery greenhouses In the cold season, the nursery greenhouse needs to be equipped with an electric stove or a geothermal line to increase the temperature of the nursery environment. The vents cover more than 40 mesh and are equipped with drip irrigation equipment. 4. Seedling management Because of the small spacing between the holes and the high density of the vegetable seedlings, the seedlings should be strengthened in the early stage management. Moisture management is the key to the success of seedlings. During the whole seedling period, water control measures can be taken to keep the seedlings not wet and dry, to ensure that the seedlings are not wilting and not long. During the nursery period, according to the growth of the seedlings, the seedlings are poured out to promote the uniform growth of the seedlings, and the temperature and humidity management are done according to the types and growth stages of the vegetables. After sowing cucumber, the daytime temperature should be controlled within 30 °C, the nighttime temperature control should not be lower than 17 °C, and the ground temperature should be kept at around 25 °C. After sowing the zucchini, in order to make the seedling grow robust and the female flower is well differentiated, it is necessary to strengthen the management of temperature regulation. The daytime temperature should be controlled at 20-25 °C, the nighttime temperature should be controlled at 10-15 °C, and the daytime temperature should exceed 25 °C. When the temperature drops below 20 °C, it is necessary to close the wind. After sowing the tomatoes, in order to promote emergence, the daytime temperature should be controlled at 25-28 °C, and the nighttime temperature should not be lower than 18 °C; after emergence, when the true leaves begin to top the heart, the nighttime temperature should be controlled at 12-15 °C to inhibit the vegetable seedlings to breathe. Consumption, promote the cultivation of strong seedlings. After the rapeseed is sown, the temperature is kept high before emergence, and the temperature is controlled after the emergence of the seedlings. The temperature during the daytime is maintained at 15-20 °C, and the nighttime temperature should be controlled at about 10 °C. For the wonderful pictures and popular comments on the intensive seedling technology of vegetable greenhouse, you may be interested in the following recommended contents. Welcome to read. Shanghai J.Shine Co.,Ltd , https://www.jshinechem.com
