What are the ways to improve fertilizer utilization?
What are the ways to improve the utilization rate of fertilizer? Please introduce the method to improve the utilization rate of fertilizer can refer to the following methods: organic fertilizer and inorganic fertilizer combined with farm fertilizer is organic fertilizer, which has complete nutrients and long-lasting fertilizer effect; chemical fertilizer is inorganic fertilizer, which has single nutrient, high content and quick effect. The fertilizer efficiency can be greatly improved by the combined application of organic fertilizer and inorganic fertilizer. If human and animal manure is combined with ammonium chloride, calcium superphosphate and potassium chloride, the yield can be increased by 10% to 15% compared with the same amount of fertilizer alone. Formula fertilization combines nitrogen, phosphorus, potassium and trace elements, which is called formula fertilization. According to the experiment, when urea is applied alone, the utilization rate of nitrogen is 30%-38%, while with formula application, the utilization rate of nitrogen can be increased to 58%-60%; the utilization rate of phosphate fertilizer and phosphorus pentoxide is 12%-14%, and the utilization rate is increased to 35%-38%; the utilization rate of potassium chloride is only 31%-35%, and that of formula application can be increased to 57%-61%. Deep application of nitrogen fertilizer can effectively prevent nutrient loss and improve nitrogen use efficiency. According to the experiment: ammonium bicarbonate application, nitrogen utilization rate of 28.6%, deep application, nitrogen utilization rate can be increased to 58.6%; urea application, nitrogen utilization rate of 42%, deep application, nitrogen utilization rate can be increased to more than 80%. Concentrated application will give priority to the limited fertilizer in the medium-and low-yield fields. According to the experiment, when the same amount of 5 kg urea and potassium chloride were applied at the same time on three types of high-yield fields, middle-yield fields and low-yield fields, the effect of increasing yield was quite different. the average application of 1 kg urea increased the yield of rice by 3.5 kg in high-yield fields, 5.8 kg in middle-yield fields and 8.8 kg in low-yield fields. Click to get more compound fertilizer application techniques
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Summer corn chemical weeding should pay attention to what?
Summer corn chemical weeding should pay attention to what? Please give guidance on chemical weeding of summer corn can refer to the following methods: To grass drug. Herbicide selection should be determined according to weed species and use time, to crabgrass, grass, green bristlegrass, chenopodium, amaranth, polygonum corn field, can choose 40% ethyl atrazine or...
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How do you know the soil is fat and thin?
How do you know the soil is fat and thin? Please introduce how to know how to distinguish between fat and thin soil by referring to the following methods: look at the color of the soil. The color of fertile soil is darker, while that of lean soil is lighter. Second, look at the depth of the soil. The fertile soil layer is generally more than 60 cm, while the lean soil is relatively shallow. Third, look at the tillability of the soil. The fertile soil is loose.
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