First, the nutritional characteristics of sugar cane
   1 . Need a lot of fertilizer. Sugarcane are large N, P, K uptake, produce 1 ton of cane, one needs to absorb nitrogen. 5 kg - 2 kg, phosphorus 1 kg -1 . 5 kg, potassium 2 kg -2 . 5 kg. The average yield of cane stems is more than 5 tons, and the high yield can reach 10 tons.
   2 . In the middle and late stages of fertility, the amount of fertilizer is large. In the total fertilizer requirement during the whole growth period, the seedling period accounts for about 1 %, the tillering period accounts for 8 % -12 %, the elongation period accounts for more than 50 %, and the maturity period accounts for 20%--40 %. During the elongation period, the amount of nitrogen absorbed is 50 % -60 % of the total absorption , phosphorus and potassium are 70 % each ; the nitrogen in the mature stage accounts for 30 % -40 %, and phosphorus and potassium each account for about 20 %. Thus, elongation absorption of nitrogen, phosphorus, potassium, at most, is formed on the yield and also the maximum.
   3 . There is a high demand for potassium. Sugar cane has the most demand for potassium, so increasing the application of potassium fertilizer can significantly increase production, and can promote maturity and increase sugar.
   Second, the fertilization technology of sugar cane
   1 . Apply enough base fertilizer. Applying the base fertilizer can improve the soil fertility, and create good conditions for the early growth of sugarcane buds, the development of roots, and early tillering. If insufficient fertilizer, fertilizer alone, the seedlings are not strong, thin base portion, thick at the thin easily, foundation is not strong, easy to lodging. Generally apply 1000 kg of organic fertilizer per acre - 1500 kg, urea 2 . 5 kg -5 kg, superphosphate 15 kg - 20 kg, potassium fertilizer 5 kg -7 . 5 kg. When the fertilizer is sufficient, a part of the fertilizer can be applied after the cultivation, and a part of the fertilizer is applied to the sugarcane ditch in the next seed, and the soil is covered after the next seed. If the amount of fertilizer is not much, it should be concentrated in the planting cane ditch . In order to better play the role of the base fertilizer, it is advisable to uniformly mix the phosphate fertilizer and the organic fertilizer before application, and then stack it for more than half a month, and then uniformly mix it with nitrogen and potassium quick-acting fertilizer. After sowing, 1,500 kg of fresh water will be poured per mu - 2000 kg.
   2 . Early application of seedlings. At the seedling stage, a large number of roots grow, and leaves and tillers are continuously produced. Early application of seedling fertilizer not only promotes the growth of sugarcane seedlings and roots, but also promotes the growth of leaves, so that the leaf area is continuously expanded, and photosynthesis is enhanced, thereby promoting the early growth of tillers. The seedling fertilizer is mainly composed of fast-acting nitrogen fertilizer, and is applied when the basic seedlings and the seedlings have 3 leaves --4 leaves. Apply 2,000 kg to 2,500 kg of water per mu , with urea 2 . 5 kg -3 kg or about 10 kg of ammonium bicarbonate , such as insufficient manure, can increase the amount of chemical nitrogen fertilizer. As the strains of sugarcane has not closure line, is not well-developed root system, absorbing fertility is not strong, in order to reduce the loss of volatile fields as a nutrient, it should be combined with fertilizing the soil cultivator culture, water facilities, especially in the more arid enough to deal with the water pit .
   3 . Steady application of attacking fertilizer. The tiller fertilizer should be applied according to the specific conditions and the number of applications. If the fertilizer and provide a more adequate Miaofei, sugarcane seedlings strong, may be finished at the tillering once administered, should be less fertilizer. If the bottom fertilizer is insufficient, the seedling fertilizer is not enough, and the seedlings are weak, the amount of fertilizer should be increased and applied in two times. 1 time in the early stage of tillering, to promote tillering, called attacking manure; 1 time in the tillering period, to ensure that tillers grow strong, called strong manure. The tiller fertilizer is generally used for 1,500 kg of human and animal manure liquid per acre - 2000 kg plus urea 5 kg - 7 . 5 kilograms, applied to the water hole.
   4 . Re-apply the stem fertilizer. The elongation period is the period in which the growth of sugarcane is the largest in the whole life, and the amount of fertilizer is the most. The attacking fertilizer is the key to increasing yield and must be re-applied. Since phosphorus and potassium fertilizers are mainly used as base fertilizers and pre-application, this stage is mainly to apply nitrogen fertilizer, so that the sugarcane plants have sufficient nitrogen nutrition, the leaves are dark green, the photosynthesis is strong, the growth is fast, and the growth is large. Usually fat-tapping stem elongation and elongation at the initial peak administered 2 times, 5 kg urea per acre --7. 5 kg or ammonium bicarbonate 15 kg ditch or acupoint application, combined with cultivating soil to promote the growth of cane root, enhance absorption function, strengthen the sugarcane strain and enhance the lodging resistance. If the application of phosphorus and potassium fertilizer is insufficient in the early stage, it should be replenished in this period so that it can reach the maximum limit without reducing the sugar content and yield due to excessive nitrogen fertilizer.
   5 . Supplement the strong tail fertilizer. To promote and sustain the growth of sugar cane in late, raise underground sugarcane buds, lay the foundation for the following year perennial production, should make fertilizer applied once a strong tail. Zhuangwei fertilizer is generally applied 2 months before maturity , with 5 kg --7 carbon ammonium per acre . 5 kg is applied after water. The application time should not be too late, and the amount of fertilizer should not be too much, so as not to delay the maturation and reduce the sugar. High soil was applied after the fertilizer was applied. 1 month before harvest Tuofei if the phenomenon should be spray application, 200 g of urea per acre with 500 g potassium dihydrogen phosphate, 100 kg was diluted with water spray.
PDC Cutter Stone Cutting in Marble Quarry,Dome pdc cutters have good Abrasive Resistance.Meanwhile we have improved the structure of interface combination between polycrystalline diamond layer and tungsten carbide substrate which can improve the distribution of stress and make the interface firm and steady. So this series of production are reliable, durable for years while high cost -effective.Dome PDC inserts are widely usedcoal mining, road and stone cutting
Pdc Insert For Anchor Bit,Pdc Anchor Bit,Pdc Anchor Bit For Quarries,Dc Cutter For Stone
HENAN YALONG DIAMOND TOOLS CO.,LTD , https://www.pdcpcbncutter.com