According to the growth characteristics of each growth period of cotton and the characteristics of required fertilizer, the targeted application of fertilizer, so that the cotton "eat" is not left over, we must eat "avoid food" to maintain a stable balance, so that after the cotton planted early, stable 6 Month, healthy growth in July, tenderness in August and September, no premature senility, no greed in October, no flowering in November, uniform bell formation in the inner, middle, and outer worlds, full, middle, and lower peaches, Mei, The structure of high yield of volcanic and fall peaches.
The demand ratio of cotton to NPK is 1:0.4:0.8. For every 200 kg of lint produced, 37 kg of pure nitrogen, 14 pounds of phosphorus, and 30 kg of potassium are required. In particular, organic fertilizers, soils, and water and fertilizers must be added. Only by increasing fertilizer utilization can we achieve stable production and high yields.
The specific fertilizer application requirements are:
1. Organic bio-fertilizer for bauxite: Fertilizer is very important for nutrient-bearing soil. Public security county has emerged due to inorganic fertilizer applied to bauxite. Fertilizer caused by improper selection of fertilizer formula caused dead seedlings, but also applied uncomminuted organic fertilizer. The correct method of fertilization for seedlings and ramie soil is to dump the biogas water with appropriate amount of superphosphate and seal the stuffy stuff before the deep plough year ago. Mix well and piling it together. General requirements in the April 15-25 period, sunny 3 days, the ground temperature above 12 °C sowing.
2. Disposing organic and inorganic fodder fertilizer for nests: The fodder has become the first fertilizer for the cotton field. Fertilizer selection is very important. The “Chu Nong†bioorganic organic fertilizer is recommended for several consecutive years, which solves the problem of rooting. With the problems of survival, disease prevention and long seedlings, quick and long-term effects, rooting, fast growth, stable growth, and early seating after planting have really played a role in fertilizer production. 20 pounds per mu, one lost six litters.
3, bud fertilizer with composite bio-organic fertilizer + phosphorus potassium fertilizer: cotton see Lei Shi Lei fertilizer, one is earlier, the second is the use of fertilizer, mainly organic fertilizer, blending appropriate amount of phosphate fertilizer, potassium fertilizer and trace fertilizer. Requirements on June 10, about 160-240 kg of composite bio-organic fertilizer per mu, 30 kg of phosphate fertilizer, 30 kg of potassium fertilizer, 3 kg of boron-zinc fertilizer, and 80 to 120 kg of refined organic-inorganic compound fertilizer. Each 3 kg of zinc fertilizer, to take a ditch or small-scale cultivator, fertilization, soil loosening, weeding, cultivating once completed.
4. Organic-inorganic compound fertilizer + compound fertilizer for peach fertilizer: Around July 10, when the cotton plants have 1 to 2 peaches, the organic-inorganic compound fertilizer 80 pounds per hectare and the urea 15 pounds per hectare will be refined. The interval is 15 days. , Then apply 30 to 40 pounds of compound fertilizer per acre.
5, cover fertilizer spread quickly available nitrogen fertilizer: August 8 before and after, cotton plant 20-22 fruit picking top heart. The growing field is strong. After picking the tips, 25 acres of urea and 25 tons of urea are poured. After the tip of the weaker field, 30 acres of urea are sprinkled in the 3 days before picking the tip. The weather is dry and the rain is dry. After 5 pm, it is full. Tiansa is effective. Don't wait for it to rain after it has rained.
6, Zhuang Qiu peach fertilizer to see Tian Bu Sa urea: August 25 to September 1, the cotton plant stamina, flower buds more plots, acres of urea 15 pounds, strong autumn peach, grow peach, due to climate change, In recent years, the flowers that were opened before September 20 can bear big peaches.
7, adhere to the entire foliar fertilization: from bud to mid-September, fight drugs to add foliar fertilizer. According to the seedling selection of fertilizers, over Wangpeng block and lack of potassium field selection
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