According to Anhui Province topography, soil distribution, soil nutrient content, cotton planting layout and fertilizer requirements, the province is divided into three fertilization zones in Huaibei, Jianghuai, and Yanjiang.
Huaibei: stable nitrogen and stable phosphorus potassium supplement zinc
The area is located in the area north of the Huaihe River, including all four cities of Huaibei, Quzhou, Suzhou, and Fuyang, and north of the Huaihe River in the cities of Handan and Huainan. The terrain is flat and the soil is deep. The main types of soil are Shajiang black soil and (Yellow) fluvo-aquic soil. Most of the soils in the central north of China are neutral to slightly alkaline and most of the soils in the south are neutral to slightly acidic. The content of soil organic matter and nitrogen is low, the content of available phosphorus is medium, the content of available potassium is relatively abundant, and the content of available zinc and available boron is insufficient.
Fertilization measures. Increase the organic fertilizer, organic-inorganic combination, straw return to the field; stable nitrogen fertilizer, phosphate fertilizer, potash fertilizer input, base fertilizer combined fertilizer, supplement zinc fertilizer, boron fertilizer. specific plan:
(1) The recommended target yield is lint 100 kg/mu.
(2) Recommended amount of fertilizer. Farmyard fertilizer 1.5 tons/mu or commodity organic fertilizer 300 kg/mu or more, and wheat stalks in full rotation to the field; nitrogen fertilizer 17-19 kg/mu; phosphate fertilizer 5-6 kg/mu, potassium fertilizer 6-8 kg/mu, Zinc fertilizer and borax 0.5 kg/mu.
(3) Fertilizer operations. Nitrogen Fertilizer Base Fertilizer:Bamboo Fertilizer:Flower Bell Fertilizer 3:2:5, Potassium Fertilizer Base Fertilizer:Leaf Fertilizer:Flower Bell Fertilizer 1:1:1,One-time Base Fertilizer for Organic Fertilizer and Phosphate Fertilizer, Base Fertilizer for Zinc Fertilizer and Boron Fertilizer Surface spray combination.
Jianghuai: Stabilize nitrogen, increase phosphorus and increase potassium, supplement zinc, and supplement boron.
The area is located between Jianghuai and Huaihe, including Hefei and Luzhou, the eastern and northern parts of Lu'an, the south of Huaihe River in Huainan, and the northern part of Ma'anshan. Cotton is grown mainly in low hillocks and fields. The soil type is dominated by yellow cinnamon soil, yellow brown soil, (ash) fluvo-aquic soil and paddy soil also have a certain area. Most of the soil is slightly acidic to acidic and the content of soil organic matter, total nitrogen, available phosphorus and available potassium are low, and the available boron and available zinc are insufficient.
Fertilization measures. Increase the organic fertilizer, organic-inorganic combination, straw return to the field; stabilize nitrogen fertilizer input, increase the input of phosphate fertilizer and potash fertilizer appropriately, combine nitrogen fertilizer and potash fertilizer, supplement zinc fertilizer and boron fertilizer. specific plan:
(1) The recommended target output is lint 80-100 kg/mu.
(2) Recommended amount of fertilizer. Farmyard fertilizer 1.5 tons/mu or commodity organic fertilizer 300 kg/mu or more, wheat and rapeseed crop rotation with wheat and rapeseed in full field; nitrogen fertilizer 16-18 kg/mu; phosphate fertilizer 6-7 kg/mu, potassium fertilizer 10-12 Kg/mu, zinc fertilizer 1 kg/mu, borax 0.5 kg/mu.
(3) Fertilizer operations. Nitrogen Fertilizer Base Fertilizer:Bamboo Fertilizer:Flower Bell Fertilizer 3:2:5, Potassium Fertilizer Base Fertilizer:Leaf Fertilizer:Flower Bell Fertilizer 1:1:1,One-time Base Fertilizer for Organic Fertilizer and Phosphate Fertilizer, Base Fertilizer for Zinc Fertilizer and Boron Fertilizer Surface spray combination.
Along the river: nitrogen control, phosphorus stabilization, potassium supplement and zinc supplementation
The area is located along the Yangtze River, including the areas along the Yangtze River in Maanshan, Wuhu, Tongling, Chizhou and Anqing and the northern part of Xuancheng. Cotton is mainly planted on alluvial plains and alluvial continents along the Yangtze River and its tributaries, and there is also a certain area of ​​planting in the Gangqiu region. The soil type is mainly dominated by river alluvium and sediment (ash) fluvo-aquic soils. Paddy soil, red soil and yellow cinnamon soil also have a certain area. The (ash) fluvo-aquic soil in the development of alluvium in the Yangtze River has a neutral reaction, and other soils are mostly slightly acidic to acidic. Soil organic matter, nitrogen, and available phosphorus are moderate. The (ash) fluvo-aquic soil in the Yangtze River alluvium has moderately available potassium content.
Fertilization measures. Increase the application of organic fertilizers, organic-inorganic combination, straw return to the field; appropriate control of nitrogen fertilizer input, stable phosphate fertilizer, potash fertilizer input, nitrogen fertilizer, potash fertilizer combined with top-dressing; supplement zinc fertilizer, boron fertilizer. specific plan:
(1) The recommended target yield is lint 100-120 kg/mu.
(2) Recommended amount of fertilizer. Farmyard fertilizer 1.5 tons/mu or commodity organic fertilizer 300 kg/mu or more, wheat and rapeseed crop rotation with wheat and rapeseed in full field; nitrogen fertilizer 18-22 kg/mu; phosphate fertilizer 6-7 kg/mu; potassium fertilizer 12-16 Kg/mu; zinc fertilizer 1 kg/mu, borax 0.5 kg/mu.
(3) Fertilizer operations. Nitrogen Fertilizer Base Fertilizer:Bamboo Fertilizer:Flower Bell Fertilizer 3:2:5, Potassium Fertilizer Base Fertilizer:Leaf Fertilizer:Flower Bell Fertilizer 1:1:1,One-time Base Fertilizer for Organic Fertilizer and Phosphate Fertilizer, Base Fertilizer for Zinc Fertilizer and Boron Fertilizer Surface spray combination.
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