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Disadvantages of traditional planting methods
First of all, cotton has more labor and complicated processes. Compared with field crops such as grain, cotton has a long production cycle, many links and complicated technology. Generally, about 25 labors per mu, about four times that of wheat, three times that of corn, and 2.5 times that of rice. From seed to harvest, cotton. The entire management operation process requires 40 processes. Secondly, the rapid increase in the price of production materials has led to an increase in the cost of cotton cultivation with large amounts of fertilizers and pesticides, and the benefits have continued to decline. Secondly, rural young and middle-aged laborers have entered the city to work in large numbers, which has made the farming land “ageingâ€, “women’sâ€, “part-time†and “deputyâ€. Therefore, the original intensive techniques have not adapted to the needs of the new situation. Finally, the production of grain and other products has basically been mechanized, and the planting system and planting methods and techniques of the original cotton field intercropping (wheat cotton intercropping, oil cotton double sets) are also unsuitable.
Advantages of cotton controlled release fertilizer
The main features of the cotton-specific formula for slow-release fertilizer are: First, the use of slow-release fertilizer technology, the release rate of fertilizer nutrients is synchronized with the growth of cotton. Secondly, the province is labor-saving and environmentally friendly. After the application of controlled release fertilizer, the amount of fertilizer per unit area is reduced by more than 15% while maintaining the same yield, saving 50% of the fertilizer application and saving the fertilizer cost by more than 20%. Second, the change and greatly simplified cotton fertilization technology. The one-time application of transplanted fertilizer can meet the needs of the whole growth period of cotton. The number of fertilization is reduced from 3-5 to 1-2 times, and its fertilizer utilization rate is increased by more than 10% compared with the common nutrient compound fertilizer. . This solves the major problem of cotton seedlings during the critical period of cotton growth (flower and bell period) due to drought or rain, or the use of large amounts of fertilizer to cause dead seedlings.
Application of cotton controlled release fertilizer
Cotton-specific formula slow-release fertilizers can be used in the following three application methods depending on the topography and climatic conditions:
1. 80-100 kg of slow-release fertilizer for each acre of cotton application (for base fertilizer or transplanting fertilizer once ditch), during the full bloom period (from the end of July to the beginning of August), apply 5-10 kg of urea per acre, suitable for partial In dry years, cotton fields with better drainage and better drainage.
2. Apply 80-100 kg of cotton special formula slow-release fertilizer plus 30-50 kg of cake fertilizer per mu as base fertilizer (or transplanting fertilizer) once (fertilization time is the same as method 1), suitable for drought year, high terrain A well-drained cotton field.
3. Apply 40-50 kg of cotton special formula for slow release fertilizer + 10 kg of potassium chloride + 25 kg of superphosphate + 50 kg of cake fertilizer as base fertilizer or transplant fertilizer per acre, and apply 20 kg per mu from the end of July to the beginning of August. Urea is used as topping fertilizer, which is suitable for cotton fields with more rainy years and lower drainage.
The above three methods, from mid-August to early September, combined with the treatment of insect leaf surface spray 0.5%-1.0% urea solution plus 0.3%-0.5% potassium dihydrogen phosphate solution, each time the amount of liquid per mu is 50 kg, each Spray once every 7-10 days, even spray 3-4 times.
It should be noted that: First, the slow-release fertilizer should not be applied to the hole or the field, and it is required to concentrate deep application. The ditch is 15-20 cm deep and the distance from the cotton plant is 30-35 cm. The fertilizer is evenly spread on the bottom of the ditch and covered with soil. Second, as a base fertilizer (or transplant fertilizer) enough early application, not suitable for application in the middle and late. Third, cotton fields with low sputum, waterlogging and poor drainage should not be applied. Fourth, look at the seedlings, according to the growth of cotton, from the bud period began to spray the appropriate amount of retinodine regulation.
Cotton special formula slow release fertilizer to improve fertilizer efficiency and achieve high yield
Cotton has a long growing period, a large amount of fertilizer, a large number of conventional fertilization, and inconvenient fertilizer application. Due to the blind fertilization of many farmers, problems such as low fertilizer utilization rate, rising cost, decreasing benefits and causing non-point source pollution are not met. The demand for modern agriculture. The “cotton-specific formula slow-release fertilizer†developed by the Cotton Institute of Anhui Academy of Agricultural Sciences has become the supporting technology for high-yield, high-yield and light-spinning cultivation of cotton, and the emergence of this fertilizer has effectively compensated for some of the problems faced by cotton planting.
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