3.3 Scientific and Rational Fertilization In the cultivation of sugarcane, organic fertilizer should be added to solve the loss of soil nutrients. According to the results of field soil testing, various elemental fertilizers should be reasonably applied and soil fertility should be ensured. 3.3.1 Pay attention to the application of organic fertilizer Establish a scientific awareness of the use of organic fertilizer, open up a wide range of organic fertilizer sources, use a variety of crop straw, weeds, biogas fertilizer, pond mud, manure fertilizer maturity as organic fertilizer. In general, 30,000 kg per hectare is applied. Conditioned can also be used as a green manure or soybean crop in the middle of a sugarcane field. Green manure is combined with chemical fertilizers in green sugar cane to compost the soil. 3.3.2 Reasonable fertilization based on soil type in sugarcane field Sand dam soil sugarcane soil texture, water retention and fertilizer performance is poor, the lack of organic matter, alkaline nitrogen and available potassium, the general organic fertilizer applied per hectare is 37,500 kg, urea 750kg, calcium 750kg, 900kg special compound fertilizer for sugarcane. The soil fertility of the sugarcane field is higher with paddy-upland rotation, and the fertility is better. Generally, 22,500 kg of organic fertilizer, 600 kg of urea, 450 kg of calcium sulphate and 600 kg of special compound fertilizer for sugarcane are applied per hectare. There are many slope lands in dam edge lands and denuded hilly cane fields, and the soil erosion is serious. Therefore, the sugarcane ditch must be excavated along the contour line to give full play to the water-retaining and fertilizer-retaining functions of the sugarcane ditch. Generally, 30 thousand kg of organic fertilizer is applied per hectare. 600kg, Calcium 750kg, 900kg special compound fertilizer for sugarcane. 3.3.3 Fertilization according to soil moisture conditions Soil hydrothermal conditions have a close relationship with the effect of fertilization. Fertilizers must be dissolved in water before they can be absorbed by sugar cane. Therefore, in the dry season or in the absence of water in the soil, the fertilizer should be mixed with water, or be used after irrigation or fertilized. The fertilizer is applied to a soil layer of 3 to 6 cm. Because the deep soil moisture content is higher than that of the surface layer, fertilizer dissolution and fertilizer efficiency can be promoted. If there is too much soil moisture or water accumulation in the field after rain, drainage should be done after drainage or digging or ditching to prevent loss of nutrients. When the soil temperature is low, the amount of fertilizer can not be too much. When the soil temperature is too high, the fertilizer is decomposed too quickly, the nutrients are consumed quickly, and the fertilizer must be deepened to extend its utility. 3.4 Adjusting soil pH Soil over-acid and over-alkali are unfavorable to soil microbial activity and sugarcane growth and quality. Regulating soil pH and creating suitable soil conditions are important measures to improve soil fertility. According to the results of recent soil surveys in Jingdong County, the area of ​​sugarcane in the county with a pH between 4.5 and 5.5 reached 0.6 million hm2. The sugarcane needs a pH of 6.0 to 8.0, so it should be improved according to different soil conditions, acidic soil should be applied alkaline fertilizer, lime, calcium magnesium phosphate fertilizer can be used to adjust the soil pH. 3.5 Fertilization According to the Characteristics of Sugarcane Growth and Fertilizer Requirements According to the characteristics of required fertilizer in each growth period of sugarcane, reasonable application of nitrogen, phosphorus and potassium fertilizer. Apply enough basic fertilizer to re-apply attack stem fertilizer, make up Shi Zhuang tail fat. When planting sugar cane, farmer fertilizer 30 000 kg per hectare, urea 300 kg, general calcium 750 kg, and 750 special compound fertilizer for sugarcane are mixed as the base fertilizer, and the soil is timely covered after application. At the beginning of June, when sugarcane began to be jointed, 600kg of urea, 150kg of calcium magnesium phosphate fertilizer, and 250kg of compound fertilizer for sugarcane were applied per hectare, and the mixture was evenly applied to the base of the cane. In mid-August, Zhuang Tail fertilizer was timely supplemented, and urea was generally applied at 225kg/hm2. To ensure that sugar cane is not prematurely decayed and the nutrients of the ratooning roots are the following year. Leisuwash 360 Glow
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