Since the beginning of winter, the temperature difference between day and night is large, which is conducive to the normal growth of common vegetables, but cold air has begun to affect vegetable crops, and some pests and diseases are aggravated. Vegetable farmers should pay attention to strengthening prevention and control.
The central task of greenhouse vegetable seedling management is to prevent pests, prevent the length of the child, and to breed the seedlings: 1 timely planting, generally 2 leaves and 1 heart, in another seedbed or with nutrient sputum once planted; 2 control fertilizer management, seedling prevention Apparent; 3 pay attention to shading under strong light; 4 mainly to prevent root diseases, available methyl chlorpyrifos or anti-disease. Ground pests and diseases include spotted fly, aphids and red spiders, which can be controlled by Herschelles.
When the leaves are 5~7 leaves, the solanaceous fruits can be moved into the greenhouse: 1 deep-turning whitening before transplanting; 2 applying base fertilizer, covering the mulch film, mainly based on column fertilizer, adding compound fertilizer, making base fertilizer, mulching film To flatten the surface of the dough; 3 cover the greenhouse film at an average temperature of about 20 degrees Celsius.
Chinese cabbage downy mildew and Plutella xylostella are more serious, and attention should be paid to prevention and treatment. Downy mildew occurs severely in Chinese cabbage every year. The foggy and high-humidity weather is an external factor that induces the disease. In the cultivation technique, the sorghum deep ditch is used, and Klu or Anke manganese zinc is selected, and it is sprayed twice in the early stage of the disease. . Plutella xylostella, aphids, and fleas are mixed with Bt1000 times and net 3,000 times plus 1000 times. At present, there are good pharmacological effects on Plutella xylostella and Pieris rapae, such as Tianli II, Haizheng Pesticide, and Ruijinte.
Cowpea, green beans, edamame and other legumes are poisoned by the bean peas. Take the control strategy of "control the flowers and cure the pods, re-treat the flowers", and start the application of the beans at the beginning of the flowering period. You can choose 40% chlorpyrifos 600-800 times, 5 % Rui Jinte 2500 times. Due to the large amount of insects in the petals of the ground, it is important to spray when applying the medicine.
Cucumbers, loofah, bitter gourd and other melons should be protected against melons: younger larvae will eat mesophyll on the back of the leaves, and after three years of age, they will take care of the leaves and leave only the leaves. Before the third instar larvae, use 5% Regent 1500 times to control, focusing on the back of the blade.
Melon powdery mildew can be controlled by Lectra, DuPont Fuxing, Shigao, and oil emulsion.
The central task of greenhouse vegetable seedling management is to prevent pests, prevent the length of the child, and to breed the seedlings: 1 timely planting, generally 2 leaves and 1 heart, in another seedbed or with nutrient sputum once planted; 2 control fertilizer management, seedling prevention Apparent; 3 pay attention to shading under strong light; 4 mainly to prevent root diseases, available methyl chlorpyrifos or anti-disease. Ground pests and diseases include spotted fly, aphids and red spiders, which can be controlled by Herschelles.
When the leaves are 5~7 leaves, the solanaceous fruits can be moved into the greenhouse: 1 deep-turning whitening before transplanting; 2 applying base fertilizer, covering the mulch film, mainly based on column fertilizer, adding compound fertilizer, making base fertilizer, mulching film To flatten the surface of the dough; 3 cover the greenhouse film at an average temperature of about 20 degrees Celsius.
Chinese cabbage downy mildew and Plutella xylostella are more serious, and attention should be paid to prevention and treatment. Downy mildew occurs severely in Chinese cabbage every year. The foggy and high-humidity weather is an external factor that induces the disease. In the cultivation technique, the sorghum deep ditch is used, and Klu or Anke manganese zinc is selected, and it is sprayed twice in the early stage of the disease. . Plutella xylostella, aphids, and fleas are mixed with Bt1000 times and net 3,000 times plus 1000 times. At present, there are good pharmacological effects on Plutella xylostella and Pieris rapae, such as Tianli II, Haizheng Pesticide, and Ruijinte.
Cowpea, green beans, edamame and other legumes are poisoned by the bean peas. Take the control strategy of "control the flowers and cure the pods, re-treat the flowers", and start the application of the beans at the beginning of the flowering period. You can choose 40% chlorpyrifos 600-800 times, 5 % Rui Jinte 2500 times. Due to the large amount of insects in the petals of the ground, it is important to spray when applying the medicine.
Cucumbers, loofah, bitter gourd and other melons should be protected against melons: younger larvae will eat mesophyll on the back of the leaves, and after three years of age, they will take care of the leaves and leave only the leaves. Before the third instar larvae, use 5% Regent 1500 times to control, focusing on the back of the blade.
Melon powdery mildew can be controlled by Lectra, DuPont Fuxing, Shigao, and oil emulsion.
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