As the open melon melon period is in the high temperature and rainy season, so the melons have a low rate of melons and serious melons. The following six points should be mastered in management:
First, pollination
Melon no sex intercourse, artificial pollination can greatly improve the rate of sitting, by selecting the male flower just opened in the morning, remove the corolla, exposed anthers, painted on the female stigma, pay attention to make the stigma more pollination. The time should be before 8 am and the latest at 10 o'clock. Can also be used 15 ~ 20 mg / kg 2,4-D flower stalk.
Second, in addition to side vines
Timely removal of side vines, because each melon melon can grow a side vine, and the growth rate is fast, the consumption of nutrients more than melon and melon, so generally should be once every other day side vine.
Third, hit the top
After melons sit on the melons, they leave 7 to 10 leaves in front of the melons, so that the nutrients can concentrate on the melons that are already sitting.
Fourth, change head
If it is because the base fertilizer is too large, the main cultivars caused by too much rain may be taken to change heads. That is, when growing a large melon with a large peanut, one or two leaves may be left in front of the melon to destroy the top. When the top leaf blade grows out of lateral vines, it can remain as the main vine. This can be changed for 1 to 2 times to live melon.
Fifth, fertilizer and water management
In the early stage of squashing, when the melon grows to about 250 grams, the top-dressing phosphorus and nitrogen fertilizer can be applied with water, and the diammonium phosphate and urea can be collected from 7 to 8 kilograms per acre. Into the melon harvest period, every 15 to 20 days pouring 1 water, and with the water flushing chemical fertilizer, ammonium per acre and urea 7 to 8 kg. In the middle stage of fruiting, the daily growth is large, and the transpiration and soil evaporation of the plants are large. It is necessary to supply water continuously. Generally, 7 to 10 days are required to be poured with 1 water, and 7 to 8 kg of potassium sulfate and urea are applied per acre of water. 5 to 6 kg. In the later period, the watering should be lighter, and the water should be poured 5 to 6 days to keep the soil moist. In the late stage of plant growth, 0.2% potassium dihydrogen phosphate plus 0.5% urea aqueous solution can be used for foliar top dressing supplementation.
Sixth, pest control
The main diseases of wax gourd are blight and powdery mildew, and the main pest is aphids.
1. Powdery mildew: strengthen the cultivation and management, rational watering and fertilization; 15% of Triadimefon WP or 1500 times of 50% sulphur suspension can be used in the early stage of disease, spraying once every 7 days or so.
2. Fusarium wilt: 3 to 5 years rotation; Soil disinfection; In the early stage of disease, use 50% carbendazim WP 500 times to irrigate roots, 200 ml per plant, 10 times a day, 2 to 3 times in succession.
3. Locusts: Insecticides, Le Siben or extermination can be used, sprayed every 7 to 10 days, and sprayed twice.