Fertilizer is the "grain" of crops. Only by letting the crops "eat" and "eat well" (reasonable fertilization according to the characteristics of their fertilizer requirements and fertilizer requirements) can they achieve maximum yield and efficiency. However, in the current actual production, the proliferation of pseudo-degradation fertilizers and blind fertilization have become a “stumbling block†that severely restricts cotton’s high yield and efficiency. Pseudo-degraded fertilizers have low nutrient content, and the high selling price often leads to “spending 10 yuan and buying 5 yuan of fertilizer nutrientsâ€. As cotton is "not enough to eat," more money also leads to a reduction in cotton production. In this regard, when fertilizing cotton, cotton farmers should “self-fertilize†without applying “formula fertilizerâ€.
In the past, the ratio of non-insecticidal cotton varieties to nitrogen, phosphorus, and potassium was 3:1:3. However, the transgenic cottons that are now commonly grown are sensitive to potassium and require a large increase in potassium, which is responsible for nitrogen, phosphorus, and potassium. The demand ratio is 3:1:4.5. Because fertilization cannot violate the basic principles of “minimum nutrient law†and “irreplaceable lawâ€, if the potassium fertilizer and trace fertilizer are lacking, it is no use that more nitrogen fertilizer and phosphate fertilizer are applied. Therefore, the steady application of nitrogen fertilizers, phosphate fertilizers, application of potash fertilizers, and supplementation of trace fertilizers, so that cotton “eat†and “eat wellâ€, can maximize the realization of high yield and high efficiency.
I. Rational Base Fertilizer According to the principle of "nutrition return theory", according to the characteristics of cotton need fertilizer, combined with the current reality, generally 350-400 kg per mu of cotton fields, applying 10 kg of urea per hectare, 20 kg of diammonium phosphate, High quality potassium fertilizer (more than 50% pure potassium) 30 kg. If large cotton planters do not require super-high yield, but instead seek maximum return rate of fertilizer, generally 20 kg of diammonium phosphate and 20 kg of potassium fertilizer per acre can be used. In order to benefit the continuous increase of cotton production, farmer fertilizer should be applied as much as possible. If 800-1600 grams of high-yield long-acting hormone (containing six trace elements such as zinc, boron, manganese, molybdenum, copper, and iron) is applied per acre, the effect of increasing production is more significant, and it can be used for 2 to 3 years once.
Second, the scientific application of topdressing phosphate fertilizer, potassium fertilizer is the best one-time application. Nitrogen fertilizers should be applied in phases. Generally, fertile cotton fields can be topped with 30% nitrogen fertilizer during the budding period and 70% nitrogen fertilizer during the flowering and bolling period. Super-high yield cotton fields can be topped with 20% nitrogen fertilizers during the bud period, and can be used in the flowering and bolling stage. 60% of nitrogen fertilizer and 20% of nitrogen fertilizer are applied at the peach stage. The same amount of fertilizer, nitrogen fertilizer staged top-up production than a one-time top-up production of more than 10%.
Third, clever application of foliar fertilizer foliar fertilizer is more economical and effective fertilization method, low cost and good effect. However, foliar fertilizers containing nitrogen, phosphorus, and potassium (especially at the seedling stage and late growth stage) should be used, and they may also be used in combination with foliar fertilizers containing trace elements in plants that contain plant growth promoters. With trace fertilizer, it can be used for 2 to 3 years without spraying this type of foliar fertilizer. During the growth period of cotton, 0.5%～2% of diammonium phosphate can be used to increase the yield of 1000-fold solution of Nonghi 3-in-1, 0.15%-0.3% of disease-resistant yield-producing king (N, P and K are more than 51%, and also contain cesium. Solutions such as alizarin lactone and naphthalene acetic acid, etc., are used in conjunction with the control of pests and spraying. The effect is very significant.
Special reminder: urea is generally less fake, use local well-known brands. It should be noted that the national requirement for urea nitrogen content should be greater than or equal to 46.3% (ie N ≥ 46.3%), for the label "NS ≥ 46.3%" (counterfeit nitrogen as "sulphur" for which nutrients should not be calculated) or "total content" ≥ 46.3% of the non-pure urea, and some 50 kg packaging is 40 kilograms of urea, 10 kilograms of low-cost "humic acid organic fertilizer," some tricks, we must avoid being taken.
The regular brand of diammonium phosphate generally contains 46% phosphorus and 18% nitrogen, and the fertilizer particles are translucent yellow plastic. Small traders are not easy to fake. The main point of identification is that DAP is very soluble in water, and burning on the iron piece shows that the particles become smaller and the pungent ammonia smell is released.
The phenomenon of potash being counterfeited is more prominent, and it is generally safer to purchase regular fertilizer distribution units with relatively good reputation. The main point of identification is to place potash on a piece of iron to burn a visible purple flame.
In terms of foliar fertilizers, some of the organic fertilizers on the market, such as acid and other fertilizers, have a high price and the effect is not as good as nitrogen, phosphorus and potassium foliar fertilizers, and foliar fertilizers containing trace elements. . In addition, some potassium dihydrogen phosphate and micro-fertilizer products are faked with low-grade “magnesium sulfateâ€, and it is necessary to pay attention to authenticity.
Organic Rice refers to the Rice planted in the process of planting rice, using natural organic cultivation methods, and completely using natural farming methods. Organic rice must be a good quality rice variety recommended by the planting improvement field, and chemical fertilizers, pesticides and growth regulators cannot be used during the cultivation process.
Organic Rice
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