Grass mat
Grass is laid so that the fruit does not come into direct contact with the soil and is preferably 4-6 cm in thickness and 10-16 cm in width.
2. Cover grass shade
In the late stage of pummification to the stage of fruit ripening, cover grass and shade and protect the melon.
3. Pest control
The main diseases of watermelon are blight, blight, blight, anthracnose, and insect pests include the ground tiger, leafminer, and Huangshougua. Comprehensive prevention and control measures are mainly adopted for pests and diseases, and in particular prevention and control of pests and diseases in the later period.
In addition, the rainy season should pay attention to prevent death of watermelon. During the high temperature and rainy season in summer, the cultivation and management of the watermelons in over-summer season has increased certain difficulties, especially the death and death phenomenon. The melon farmers should fully understand the causes and prevention and control methods of dead plague. The disease of watermelon is also called Phytophthora, commonly known as "dead bug". It is a kind of soil fax fungus disease. It can occur in watermelon seedlings and adult plants, especially in the late stage of watermelon growth and high temperature and rainy conditions. The onset is rapid and severe; When the rainy season comes early, the precipitation takes a long time, and when the rainfall is heavy, the onset is early, the condition is heavy, and the loss is large. The peak incidence in the field is often immediately after the peak rainfall. Leaf disease, resulting in dark green water spots round or irregular shaped lesions, rotten or boiled like hot water when the humidity is too large, dry spots, light brown, easy to break. The basal part of the vine spreads, and a spindle-shaped water-immersed dark green spot appears, enveloping the stem and rot, and all the diseased parts are dead. Onset of fruit, the formation of dark green round water-immersed depression spots, rapid expansion after the whole fruit, resulting in fruit rot, the smell of silage, dense white mycelium diseased surface.
Control methods: From the earliest stage of disease occurrence, use Xiangnong No. 4 700 to 800 times liquid, 72.2%% Preclosure 800 times liquid, 64%% anti-disease wettable powder 500 times or 58%% metalaxyl manganese Zinc wettable powder 500 times liquid, more than 1000 times the amount of various drugs plus harvest, spray once every 7 to 10 days, and even spray 3 to 4 times. When necessary, it is also possible to use the above-mentioned liquid plus irrigation harvest No.1 to irrigate the roots, each of which irrigates 0.4 to 0.5 liters; if spray and irrigation are performed at the same time, the effect is better.
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