Cotton leaves are the most important vegetative organs of cotton, with photosynthesis, respiration, transpiration and absorption. Using its absorption and photosynthesis, targeted foliar spray fertilizer can promote plant stability, enhance disease resistance, insect resistance, drought resistance, anti-premature aging ability, and regulate the relationship between vegetative growth and reproductive growth. Amplitude increases production and quality.
1. Spraying type: cotton seedlings can spray 0.3%-0.4% potassium dihydrogen phosphate solution or two-thousandths of borax solution; in July to late August, control red leaf stem blight and premature aging, per The acre is sprayed with 0.5 kg of potassium chloride, 0.3 kg of urea and 10 g of borax on 30 kg of water. Even spray 2 - 3 times. Each spraying interval is 7-10 days.
2. Spraying part: The adhesion and absorption capacity of the back side of the cotton leaf to the fertilizer liquid is much larger than that of the front side. When spraying, the spray head should be washed up, and the fertilizer liquid should be sprayed on the back of the upper part of the cotton plant.
3, spraying time: generally sunny after 5 pm spray, cloudy days can be sprayed all day, 4 hours after spraying should be heavy spray.
4, the number of spraying: the degree of fertilizer on the back of the cotton leaf is not dripping, the size of the cotton field, depending on the size of the cotton field, the amount of fertilizer used between 30-50 kg.
5, scientific mixing: foliar spray fertilizer and insect-proof spray can be combined, pay attention not to mix acid fertilizer with alkaline or alkaline fertilizer and acidic drugs, and flexible control according to the needs of pest control.
Huaxian County Jingzuo Station: Shang Hongyan
1. Spraying type: cotton seedlings can spray 0.3%-0.4% potassium dihydrogen phosphate solution or two-thousandths of borax solution; in July to late August, control red leaf stem blight and premature aging, per The acre is sprayed with 0.5 kg of potassium chloride, 0.3 kg of urea and 10 g of borax on 30 kg of water. Even spray 2 - 3 times. Each spraying interval is 7-10 days.
2. Spraying part: The adhesion and absorption capacity of the back side of the cotton leaf to the fertilizer liquid is much larger than that of the front side. When spraying, the spray head should be washed up, and the fertilizer liquid should be sprayed on the back of the upper part of the cotton plant.
3, spraying time: generally sunny after 5 pm spray, cloudy days can be sprayed all day, 4 hours after spraying should be heavy spray.
4, the number of spraying: the degree of fertilizer on the back of the cotton leaf is not dripping, the size of the cotton field, depending on the size of the cotton field, the amount of fertilizer used between 30-50 kg.
5, scientific mixing: foliar spray fertilizer and insect-proof spray can be combined, pay attention not to mix acid fertilizer with alkaline or alkaline fertilizer and acidic drugs, and flexible control according to the needs of pest control.
Huaxian County Jingzuo Station: Shang Hongyan
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