How to rationally fertilize cotton

There are some problems in the production of cotton varieties, among which there are many problems related to fertilization. In summary , there are more than two or two, that is, more nitrogen fertilizers are applied, the total amount of fertilizer is more, and the application of organic fertilizer is less. Less potash.

In the application of nitrogen fertilizer, some places are used to apply ammonium bicarbonate, and some places are used to apply urea. Because cotton farmers believe that nitrogen fertilizer is cheaper and has quicker fertilizer efficiency, especially ammonium bicarbonate fertilizer has the fastest effect. The total amount of fat and more investment, mainly basal fertilizer applied once a high content per acre of nitrogen, phosphorus, and potassium are each 15% or 16% more than 50 kg of fertilizer, but also the administration of other fertilizer top dressing. Because some farmers believe that high fertilizer input, can achieve high output, but also save some fertilizer application. Less organic fertilizer, first, because now fewer farmers rearing poultry and livestock, and second, because less labor in the prime of life, many elderly people left behind, unable to manufacture manure. Below normal application of potash on cotton, farmers First, lack of understanding of potash, potassium fertilizer does not believe that Shi had little effect on cotton production, and second, although some farmers know, but the first half of the potash price per bag (50 kg ) Up to 200 yuan, farmers talk about potassium color change.

In cotton production, improper fertilization severely restricts cotton production. This year, some farmers applied excessive urea on the cotton seedling bed, so that the cotton seedlings that were originally neatly tidy were “burned out” by the fertilizer partially or whole . Some farmers apply 50 kg or more of compound fertilizer once when transplanting cotton seedlings. After the cotton seedlings are transplanted, the seedlings are delayed, and the cotton seedlings are pulled out from the nutrient, and the roots become brown. New born white roots. This is mainly caused by the reverse concentration of the fertilizer solution concentration around the root system, which causes the root system to absorb the function of the fertilizer and water. Some farmers completely applied ammonium bicarbonate as the base fertilizer, and the cotton seedlings grew very fast in the early stage, but the cotton vegetative growth was strong after the entanglement, and the height of the plants exceeded 1 m. In the cotton field adjacent to the appropriate amount of compound fertilizer, there are more than 5 varieties of the same species . Under the climatic conditions of drought and autumn drought this year , cotton without organic fertilizer has poor water retention and fertilizer retention performance, and the stamina is obviously insufficient, and premature aging occurs prematurely. Administered or not administered potassium potash only a small amount of cotton, cotton early leaf scorch, showed typical blight, cotton upper portion fruiting abscission layer 5 up to 70%, cut serious.

In cotton production, these reductions in production due to improper fertilization should be learned and taken as a warning.

Do a good job in cotton fertilization. More practical fertilization experience: the bottom of the fat foot, the speed of seedlings, the stability of the buds, the flower bells and fats, and the heavy application of peach fertilizer. In terms of specific operations, it must be scientifically formulated and timely and appropriate. The ratio of nitrogen, phosphorus and potassium fertilizers is 3 : 1 : 3 . The following options are available around the reference fertilizer, i.e. fertilizer per acre with bio-organic fertilizer content of 50 to 75 kg or 45% of the fertilizer 30 kg, 10 kg potassium; Miaofei first urea per acre 4 kg, the second 5 kg of urea per acre; bud fertilizer per acre content of 45% compound fertilizer 20 kg, 15 kg potassium; boll manure, 20 kg of urea per acre; peach fertilizer urea per acre 10 to 15 kg. The various stages of the use of targeted microbial fertilizer, to avoid missing element deficiencies cause some of trace elements, as well as improvement of crop rational and effective absorption of the other elements.