Cotton in North China “Feeding Formula, Package Fertilizer†program Fertilizer demand characteristics of cotton: Cotton is a kind of annual crop with good temperature and good light. It takes a long time for vegetative growth and reproductive growth, and requires a large amount of fertilizer. According to the study, about 13.8 kilograms of nitrogen, 4.8 kilograms of phosphorus, and 14.4 kilograms of phosphorus are needed for every 100 kilograms of lint produced. The high yield of cotton requires strong seedlings in the early stages, coordinated growth of medium-term vegetative growth and reproductive growth, and robust growth without premature aging at the later stage. Cotton fertilization misunderstanding: 1. Disregard potassium. Some farmers' friends often use only nitrogen (ammonium carbonate, urea) or nitrogen and phosphorus fertilizers (diammonium) in top dressing. Excessive application of nitrogen fertilizer may cause the vegetative growth of cotton to affect reproductive growth, causing falling bells and fewer bells. Application of nitrogen and phosphorus fertilizers in successive years can easily lead to enrichment of nitrogen and phosphorus in soil, but the supply capacity of potassium is seriously insufficient. This has led us to use a lot of fertilizer, but cotton production has not risen. Therefore, we propose to increase the fertilizer with high potassium content, which will significantly improve the drought resistance, resistance to warts, and disease resistance of cotton. The effect of increasing yield is not achieved by single application of N and P fertilizers. 2. Ignore trace elements. In recent years, the deficiency symptoms of trace elements have become more and more common in cotton. For example, cotton lacks boron and manganese deficiency can cause flowering, fruit drop, fruit branch number reduction and cotton fiber quality decline, iron deficiency and zinc deficiency, and can easily cause yellow leaf lobular disease. Therefore, in the production of cotton, attention should be paid to the application of trace element fertilizer lion and horse fruit glycosides. "Little fertilizer" can often produce "big effect." 3. The top dressing method is not scientific. To save time and effort on the map, topdressing is done by means of spreading, regardless of fertilizer utilization. Fertilizer application will result in the volatilization of effective nutrients, especially fertilizers such as urea, which will reduce fertilizer efficiency. Therefore, it is recommended that cotton should be topdressed or grooved when topdressing, and the fertilizer utilization rate of soil-covered fertilizers should be much higher than that of ground spreading. This will not only reduce our economic investment, but also receive good results. "No pain no gain". 4. The symptoms of defertilization appear in the late growth period of cotton, and the main performance is cotton premature aging. The main reason is that because farmers' friends are not willing to pursue peach fertilizer in August in order to reduce labor, it is very difficult to guarantee that the cotton will not be fattened in mid-September, which is particularly likely to cause premature aging of cotton. These symptoms are particularly evident in soils with high sediment concentrations, and the performance of premature aging is more severe in the years with high rainfall. To solve this problem, we suggest that: First, everyone should try to select fertilizers that are long-pitch and full-lasting fertilizers for top-dressing, so as to ensure that they will not be deferred later. Second, August-September is the period of concentrated peach growing. It is of great significance to increase the application of peach fertilizer. The investment return rate for applying peach fertilizer is twice as high as the previous one. Zhongde brand compound fertilizer is a good quality fertilizer. Public German Fertilizer (Yantai) Co., Ltd. is a German-owned company. The company produces the Zhongde brand series of fertilizers. It uses German agricultural experts to specially design fertilizer formulas for Chinese rural areas. There are two series of available fertilizers and long-term fertilizers. The outstanding characteristics of Zhongde long-acting fertilizer are: high content, complete nutrients, moderate nutrient release rate, long fertilizer effect, sufficient stamina, and high fertilizer utilization rate (of which nitrogen fertilizer efficiency is 20 days longer than normal small granular urea, and the utilization rate is high. More than 20%). This long-acting fertilizer is particularly suitable for the needs of long-growing crops on nutrients, such as cotton, garlic, wheat, fruit trees, etc., can achieve early investment, early benefit, long return. The use of long-term fertilizers in sandy lands with poor permeability and poor fertility can effectively reduce the leaching loss of fertilizers. Long-term fertilizers have the advantages of long-term fertilizer efficiency and high utilization rate. Suitable formulas for making cotton base fertilizers are: 19-25-12, 18-28-10, 19-19-19 Formulas suitable for cotton topdressing include: 25-13-17, 22-16-18. This high-nitrogen and high-potassium formula can meet the demand of cotton, and it can not only make cotton eat what you want to eat (nitrogen and potassium), but also cannot waste what you cannot eat (phosphorus). Cotton fertilization points: base fertilizer: North China's cotton is divided into two types: spring direct seeded cotton and interplanted cotton. In the spring of direct seeded cotton base fertilizer, 1,000 kg of farmyard manure or 50 kilograms of organic manure is generally used, and chemical fertilizer is available for 19-25-12,18- 28-10,19-19-19 Virtues, fertilizer 40-50 kg. Due to the fact that no base fertilizer is used for the interplanting of cotton, topdressing is particularly important and the quantity should be increased appropriately. The period, number of times and amount of topdressing fertilizers are also inconsistent. In general, it can be divided into Miao Fei, Lei Fei, Hua Fei, and Fei Fei. Lightly applying seedling fertilizer on the basis of applying base fertilizer, it can be applied to 10-30 kilograms of Zhongde 25-13-17, 22-16-18 compound fertilizer per acre in 3 true leaves, and spraying a German lion. Horse brand foliar fertilizer “Ye Cui†(diluted 600 times to promote leaf growth) plus lion horse leaf foliar fertilizer fruit fruit (diluted 5000 times, supplemented with various trace elements), sprayed on both sides of the blade, strong Seedlings have significant disease resistance. Before the budding of budding fertilizers, Mushi Shide 19-19-19, 18-18-18 compound fertilizer 10-20 kg, can promote the growth of buds and reduce the loss of buds. Spraying a German lion horse leaf fertilizer "flower treasure" (diluted 600 times to promote flower bud differentiation) plus lion horse leaf fertilizer fat pheromone (diluted 5,000 times, supplement a variety of trace elements), sprayed on the leaves Both positive and negative. Reapply the beginning of flowering and flowering, Mushi Shide 19-19-19, 18-18-18 compound fertilizer 30-50 kg. Fertilizers and fertilizers depend on the growth of the cotton, preventing the use of too much fertilizer leading to overgrowth of nutrients and falling buds. Spray a German lion horse leaf fertilizer "flower treasure" (diluted 600 times, to promote flower bud differentiation and peach peach) plus lion horse brand foliar fertilizer fruit fruit (diluted 5000 times, supplement a variety of trace elements), Sprayed on both sides of the blade, the effect of disease-resistance and yield increase was significant. Applying a large number of boll-fertilizers, it can increase the application of peach fertilizer according to the growth of cotton. The application of 19-19-19 and 18-18-18 compound fertilizers per acre for 15-20 kilograms can increase the number of bolls. Large, to achieve "full of peaches, autumn peach top cover" good effect. Spray a German lion horse leaf fertilizer "fruit king" (diluted 600 times to prevent premature aging) plus lion horse brand foliar fertilizer element (diluted 5000 times, supplement a variety of trace elements), spraying in the positive leaves On the opposite side. Suggestion: The period of topdressing and quantity must be determined by the flexible use of cotton growth to maintain the coordination of reproductive growth and vegetative growth in the middle and late stages, and to avoid problems such as falling flowers and falling fruit due to improper fertilization and premature aging. Yantai Agricultural Production Material Technology Co., Ltd. Tel
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