Cucumber downy mildew can occur throughout the reproductive period and spread quickly after the disease has occurred. It can be sprayed with 250 times each of sharp pepper, ginger or purple rind, sprayed once every 3 days, and sprayed twice. Or before the occurrence, use 2% pyrimidine nucleoside antibiotic water 200 times, or 47% spring thunder Wong copper wettable powder 600 to 800 times liquid, 5 to 6 days, and even spray 2 or 3 times.
Cucumber target spot disease can choose to use 41% ethyl allicin EC 2000 times, or 0.5% amino oligosaccharide agent 400 ~ 600 times liquid, 53.8% copper hydroxide dry suspension agent 600 times, 47% Chunlei Wang copper Wet powder 800 times liquid spray control.
Whitefly can use 0.3% azadirachtin emulsion 1000 times, or 50 times biological soap spray control, spray attention to the liquid evenly sprayed to the foliage, the back of the insect body, every 5 to 7 days spray 1 time. In addition, a number of physical prevention and control measures should be taken together to prevent and control, such as yellow board trapping, hanging in the facility all year round, can greatly reduce the density of insect population, and then assist with the prevention and treatment of drugs, can basically eliminate whitefly. Cover insect nets, cover the insect nets in the vents of greenhouses and greenhouses, block the entrance of whitefly into the greenhouse, and use pesticides to kill whitefly in the greenhouse. In the greenhouse hang frequency vibration killing lamp.
APIs And Parmaceutical Intermediates
Apis And Parmaceutical Intermediates,Pitavastatin Calcium,Tropisetron Hydrochloride,Lipoic Acid
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