Different principles of topdressing in different cotton producing areas
In the Huanghuaihai cotton area, the amount of nitrogen and phosphorus fertilizers in this area is generally high, the effect of increasing fertilizer production is declining, and the application of organic fertilizer is insufficient, and the deficiency of trace elements such as boron and zinc occurs. The topdressing of high-yield cotton should be mastered in Shenglei- The first flower is chased by the first fat, the flower bell is chased by the second fat, and the essentials of fattening after the fall. Specifically, 15% to 20% of the nitrogen fertilizer is used in the full bloom period, and the potassium fertilizer base is chased (the initial flowering period). For the weaker cotton field, combined with application of mixed spray 0.5% ~ 1.0% urea and 0.3% ~ 0.5% potassium dihydrogen phosphate solution 50 ~ 75 kg / time, spray every 7 to 10 days, continuous spraying 2 ~ 3 times.
In the middle and lower reaches of the Yangtze River, 25%-30% of the nitrogen fertilizer is used as top dressing in the flowering period, 15%~20% is used as the top dressing in the boll period; for the weaker cotton field, 0.5%~1.0% urea and 0.3%~0.5 are sprayed. The potassium dihydrogen phosphate solution is 50~75 kg/time, sprayed once every 7~10 days, and sprayed continuously for 2~3 times.
Xinjiang Cotton Region This area is characterized by the integration of film and water and fertilizer. In the field irrigation, 20% to 25% of the nitrogen fertilizer in the cotton field is used in the flowering period. The cotton field drip under the membrane is applied with water droplets according to the growth of cotton. However, the amount of fertilizer per time does not exceed 2 kg / mu (pure nutrient content).
Type
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Description
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FEATURES & BENEFITS
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Features
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Base Cabinet,Kitchen Base Cabinets,Sink Base Cabinet,Kitchen Sink Base Cabinet, Gloss White Kitchen Cabinet
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