First, understand the performance of improper fertilization. Excessive application of fertilizer, cotton planted after the delay to launch a new leaf, small leaves, leaf color dark, brown roots; fertilization is not with fine soil and seedling roots when transplanting isolated, it will also cause root burn cotton seedlings lag length; Seedling fertilizer application of urea concentration is too large, will make cotton seedling leaf edge scorching, leaf tightening difficult to carry out, some young stems from green to brown, serious base of young stems are black and even whole cotton seedlings withered. These symptoms of fattening are caused by reverse osmosis caused by excessive concentration of soil solution.
Second, find out the fertilizer requirement regularity cotton. Cotton crop is one larger than the fertilizer requirement, but the seedlings, fertilizer requirement of bud 20% to 30% of the entire process takes only fertilizer, fertilizer requirement in a large number of flowering to boll peak, therefore, should experience more suitable fertilization They are: basal foot, Miaofei speed, stable fat bud, flower and boll fertilizer ruthless, Purse peach fertilizer. Nitrogen, phosphorus, potassium fertilizer ratio should be 1: 0.3: 1.
Again, the formula is applied to the base fertilizer. First, where there are conditions, it is necessary to use organic fertilizer as the mainstay, and apply appropriate amount of phosphorus and potassium fertilizer. The organic fertilizer produced by the farmer is about 4000 kg, with 25 kg of phosphate fertilizer and 15 kg of potash. Second, the application of inorganic fertilizer should be based on high-efficiency compound fertilizer, 25 kg of high-content per mu, 50 kg of medium-content per mu, and 10 kg of potassium fertilizer, 0.4 kg of boron, 0.5 kg of zinc fertilizer. kg. The third is to use a hole to transplant seedlings. After fertilization, it should be separated by fine soil, and then planted with seedlings.
Fourth, the application of quick-acting seedlings. For cotton fields with sufficient base fertilizer, one application of seedling fertilizer can be applied. For cotton fields with insufficient base fertilizer, 2 times of topdressing should be applied during the seedling stage. 5 kg of urea should be applied for the first time, and 8 to 10 kg of urea should be applied for the second time. About 25 kg of ammonium bicarbonate, or apply water to remove the feces. In the seedling stage, it is necessary to highlight the seedlings with quick-acting fertilizer.
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Commercial lighting is a term used to describe lighting that is used in commercial spaces, including auto dealerships, distribution centers, churches, factories, offices, and warehouses. Unlike residential lighting, commercial lighting is made to withstand more abuse and has a longer lifespan.
While the focus of residential lighting is often on aesthetics, commercial lighting is task orientated. Commercial lighting systems are designed based on what the application is. For example, in an office-type setting, you may see task lighting, which illuminates specific areas where employees need concentrated light to be able to perform their jobs.
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