Post-planting management

1, temperature management: (1) colonization-the time from colonization to creeping growth of 5-6 leaves of melon seedlings is about 13- 15 days. Generally, outdoor air is not released in the first three days after planting, which promotes the slow growth of seedlings. After delayed emergence, the ventilation rate can be gradually increased every morning 10:00- 2: 00 pm, so as to reduce the temperature and remove moisture, improve the lighting conditions, reduce the growth rate of plants, improve the stress resistance, and achieve leaf thickness, neck thickness and strong roots. (2) Colorful flag trees and fixed melons: this stage has entered the end of April, and the late frost period has passed, so freeze injury is generally not considered. At this stage, the roots and stems and leaves of plants grow rapidly, which easily leads to difficulties in fruit setting. Therefore, it is necessary to amplify the wind power in the morning and noon, cover the film at night, promote the rational distribution of nutrients, and set fruit early.

2. Pruning method: generally, the three-rattan pruning method is adopted. When the main vine grows to 30 cm long and the branch at the base of the stem reaches 5 cm, two healthy lateral vines with uniform growth are selected for each plant, and the redundant lateral vines are removed as soon as possible. Generally, the second or third female flower of the main vine is selected for fruit setting, and when the main vine can't sit still, the female flower of the side vine can be selected for fruit setting. Generally, the redundant lateral branches before fruit setting are removed as soon as possible, and 3~6 leaves can be left for topping in the next few sections to increase the leaf area and increase the yield.

3. Fertilizer and water management: When the planting water is sufficient and the main vine is about 50 cm long, 5 kg of urea and 65,438+00 kg of potassium dihydrogen phosphate can be applied with water. When the young fruit grows to the size of an egg, wash 15 kg of urea and 20 kg of potassium dihydrogen phosphate into each mu with water. When the fruit bowl is large, according to the soil fertility, urea 10 kg, potassium dihydrogen phosphate 15 kg can be applied per mu, and foliar fertilizer can also be sprayed to prevent premature senescence of stems and leaves.