å’‹ Management Before and After Planting of Early Spring Vegetables
First, low temperature refining. Low-temperature refining seedlings can significantly enhance the low-temperature tolerance of vegetable seedlings, which is conducive to slow seedlings after planting. Low temperature refining is generally carried out 7-10 days before the planting of vegetables, and the time should not be too long. The temperature of the nursery bed is controlled at 15-20 ° C during the day and lowered to 8-12 ° C at night to improve the cold resistance of the seedlings. The temperature of the seedbed during low-temperature refining should not be too low, otherwise the normal physiological functions of the root system will be affected, and aging seedlings and dead seedlings will easily appear, which will affect normal growth. Second, shed in advance. In order to slow down the seedlings of vegetables as soon as possible after planting, it is necessary to reach an optimal temperature in the greenhouse, especially for fruits and vegetables such as tomatoes, eggplants, cucumbers, etc. These vegetables have higher requirements for ground temperature and air temperature, and require 5-10 The ground temperature of centimeters must be above 15 ° C, and the minimum temperature must not be lower than 10 ° C for normal growth. Therefore, 10 days before the planting of vegetable seedlings, the shed should be covered with plastic film, and the shed should be closed to increase the ground temperature. Third, timely colonization. In early spring, the temperature is unstable, and it is prone to cold weather such as the cold spring, strong winds, and freezing snow. Vegetable seedlings must be listened to before watching the weather forecast. It is required that there is no cooling and snowy weather within 5 to 7 days. . Fourth, strengthen insulation. After the seedlings are planted, the insulation work must be strengthened to promote the seedlings to slow down. Sheds should be closed within 3 to 5 days after planting to prevent the wind, and the shed temperature should be increased to accelerate the seedlings. The temperature during the day is maintained between 28 and 30 ° C, and the temperature at night is maintained above 20 ° C. In the event of windy and cool weather, cover insulation at night to prevent excessive heat dissipation at night and cause the temperature of the shed to drop too quickly. In addition, the laying of crop straw in the operation row can not only increase the ground temperature, but also reduce the humidity in the shed, which is beneficial to the healthy growth of vegetables. Disclaimer: Some articles on this website are transferred from the Internet. If you have third party legal rights, please inform this website to deal with them. phone
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