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Experts put forward three suggestions: cover the film and increase the temperature of the ground; use plastic film and shade nets to erect windproof barriers on the north, northeast, and northwest sides of the melon vegetable field; when the melons and vegetables meet low temperatures below 6 degrees, the aboveground parts will be frozen. Whole plants can be covered to prevent frostbite.
The best combination of organic fertilizer and chemical fertilizer application, NPK reasonable mix, so that balanced fertilization; in the vegetable nursery, the appropriate use of paclobutrazol, dwarfing agent to cultivate strong seedlings, enhance the cold resistance of the seedlings; fruit vegetables Plants should be given less nitrogen before fruiting, and potassium dihydrogen phosphate can be sprayed appropriately.
At low temperatures, the common pests and diseases of vegetables in winter in our province mainly fall into three categories: physiological disorders, diseases, and insect pests.
Physiological obstacles countermeasures: increase the application of organic fertilizer, foliar spray amino acids, humic acid and other organic liquid fertilizer. At the same time, according to the actual growth of crops, some regulators and trace elements can be added, such as “Ai Zengmei†and “Stecopeâ€.
Diseases of vegetables and vegetables in winter mainly include epidemics, gray mold, bacterial wilt, blight and virus diseases.
Disease countermeasures: Spray the protective agent in time, such as 80% “Polka Plus†or 80% “Sapphire†or 80% “Dashengâ€, etc., spray 50% “Anke†or 60% “Fluoro Manganese Zinc†after onset. Wait.
Gray mold countermeasures: Use 65% "Kerdling" or 50% "Nulling" or 50% "Sikroning" for foliar application.
Bacterial wilt disease strategy: Use 77% of "Donning" or 2% of "KeYi Kang" or 2% of "JiaShuang" to irrigate the roots.
Wilt disease strategy: Use 20% "good" or 20% "friends" or 50% "carbendazim" to root.
Virus disease countermeasures: timely spraying the leaves with 2% "good pu" or 2% "bacterial grams of bacillus" or 2% "viral" induced plants such as resistance. In addition, you can increase the organic fertilizer, pay attention to insect pests such as aphids and thrips.
According to experts, insect pests in low-temperature conditions include aphids, thrips, apes, teloplasia, diamondback moth, and cotton moth.
Expert countermeasures: Aphid and scorpion insect pests can be controlled with 10% "Imidacloprid" or 3% "Acetamiprid"; 螨 avermectin can be used "" fenpropathrin "or" 哒螨 spirit " Pharmaceuticals such as textiles; T. riddle, diamondback moth and cotton bollworm and other pests can be selected drugs, such as "dig", "happened", "methyl avermectin" or "avermectin" and so on.
Antifreeze in summer vegetables have countermeasures
Sustained low temperatures in Hainan Province can easily cause diseases and insect pests in vegetables and are prone to cold production. How do winter crops prevent freezing, prevent disease, and prevent insects? In the past few days, the reporter visited a number of agricultural experts and asked them to open prescriptions and find solutions for melon vegetable growers.
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