Spraying "seven liquids" on cotton increases production by 100 jin.
According to the experiments of our Institute of Agricultural Sciences and cotton farmers for many years, spraying the following nutrient solution at different growth stages of cotton can effectively increase the yield by 20% and 30%. The method is introduced as follows:
1. Chicken manure: take 3 kg of fermented dried chicken manure, 2, add 7.5 kg of water, 3, soak for 30 hours, 4, cook again for 5 and 3 hours, 6, filter out the residue, 7, then ferment, 8, when there is white mold on the liquid surface, 9, filter out white mold, 10, add water 50 kg, 11, spray evenly in 1 mu of cotton field. 12. Rabbit dung: take 1 kg of rabbit dung, 13, crush and add 5 kg of water, 14, boil for 20 minutes and ferment for 15 and 5 days, 16, filter out the residue, 17, add water 40, 18, 50 kg, 19, spray 1 mu of cotton field. 20, silkworm feces: dry silkworm dung 1 kg, 21, add water 7.5 kg, 22, soak for 24 hours, 23, add water for 24 hours, 3 hours, 25, filter extract, 26, add water 50 kg, 27, evenly spray 1 mu of cotton field leaf surface. 28. Urea solution: timely spraying concentration in cotton field is 0.3% in three-leaf stage, 0.4% in five-leaf stage, 0.5% in bud stage, 0.5% in flower and boll stage, 1-1.2% in boll opening stage and 1% in autumn boll stage. In order to improve the efficiency, 100 grams of ferrous sulfate can be added per mu in 29 and three-leaf stage, 1 kg and 31 of calcium superphosphate can be added in the five-leaf stage, but 5 kg of water can be added in the five-leaf stage, and 150 grams of borax can be added in the bud stage. 150 grams of potassium dihydrogen phosphate and 150 grams of ferrous carbonate can be added in the boll opening stage. Spray the front and back of the leaves evenly. 32, white sugar solution: when the cotton plant budding, 33, pruning and removing branches to wipe the superfluous buds, 34, timely spraying 1% white sugar solution, 35, replenishing nutrition, 36, promoting the wound recovery as soon as possible 37, 38, healthy growth; spraying 1.5% white sugar solution at full flowering stage, 39, reducing bolls, 40, conducive to flowering peach. 41. Honey liquid: 1.2% honey liquid was sprayed at the flower and boll stage, and 1.5% honey liquid was sprayed at the full flowering stage. Minerals, amino acids, enzymes and other organic elements in honey can quickly supplement cotton plant nutrition, 42, conducive to flowering and fruit setting, 43, reducing bud drop, 44, enhancing disease resistance, disaster resistance and prevention of premature senility. 45. Vinegar: 0.3% sprayed at the three-leaf stage, 0.5% at the five-leaf stage, 1% at the bud stage and 1.5% at the boll stage. The application of different concentrations of vinegar (grain vinegar and fruit vinegar) can enhance the photosynthetic effect of cotton plant, 48, leaf hypertrophy, 49, strong growth, 50, enhance the ability of disease resistance, disaster resistance and premature senility prevention.
- Prev
Spraying fertilizer on cotton is good for increasing yield and less diseases and insect pests.
Spraying nitrogen fertilizer: urea can destroy the chitin of insects. When cotton aphids (especially aphids) occur, the mixture of urea, washing powder and water in the proportion of 4 ∶ 1 ∶ 400 is sprayed, which has obvious killing effect. Spraying phosphate fertilizer: during the occurrence period of adult cotton bollworm, 1%-2% superphosphate leaching solution as foliar fertilizer can turn oxalic acid into calcium oxalate and lose its attraction to cotton bollworm. The duration of each phosphorus spray is generally 2-3 days. Spraying potash: 10kg of plant ash, 50kg of water, soaking
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It is suitable for cotton to apply fertilizer skillfully to prevent disease and increase yield in the later stage.
In the later stage of cotton growth, the nutrient absorption capacity of cotton root decreased obviously, but if nitrogen, phosphorus, potassium, zinc, boron and other fertilizers were sprayed on cotton leaves, it could prevent premature senescence, promote early maturity, prevent disease, prevent boll falling and bear big peach. It has a significant effect on increasing production. 1. Applying nitrogen fertilizer to prevent premature senility with 1% urea solution 75 Mu 100kg per mu, spraying once every 5 Mill 7 days for 3 consecutive times, can enhance the photosynthesis of leaves, prevent premature senility and increase yield. 2. Applying phosphate fertilizer to promote precocious cotton foliar spraying in the later stage.
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