Q: What is the demand for turfgrass for nutrition? What are the characteristics of management and fertilization? Experts: The cold-season turfgrass planted in northern greenland and grass species belong to the grass family. The characteristics of nutrient demand are that nitrogen and potassium fertilizers are more than phosphate fertilizers. In the management of green land turfgrass, turfgrass has to maintain its position for many years. Turfgrass has 70% to 80% of its roots spread on shallow soil at a depth of 20cm. Apart from base fertilizer, it is not possible to plow every year. Deep base fertilizer. Can only be used during the growing season of the lawn, or evenly spread the fertilizer in the grass roots, or in combination with water spray fertilizer. Turfgrass should be often pruned and pruned for 20 to 25 times a year, especially in summer and autumn. The average annual pruning time is 7 to 10 days and the amount of fertilizer is large. In the fertilization of green land turfgrass, it is necessary to have a relatively large amount of balanced fertilization of nitrogen, potassium, and phosphorus, but also to the main application method of topdressing, gentle and continuous supply of nutrients. Question: In order to maintain the beauty of the lawn, how should we select and operate fertilization? Experts: Regarding the arrangement of fertilizers, the recommended total amount for one-year green lawns is 13 to 16 kg/mu of net nitrogen, 6 to 8 kg/mu of net phosphorus, and 12 to 13 kg/mu of net potassium. In the selection of fertilizers, phosphorus fertilizers are used once a year for once-inferior fertilizers, nitrogen fertilizers and potash fertilizers are applied in small quantities several times. In the fertilizing season from the end of March to the end of October, no or little application of high-temperature and heavy rain control is performed in July-August. Nitrogen fertilizers are generally applied once a month. Nitrogen fertilizers are applied 7 to 8 times a year, and potassium fertilizers are applied 4 to 5 times. If compound fertilizers are selected, compound fertilizers with nutrient ratios of mainly nitrogen and potassium and less phosphorus should be selected. In recent years, the international market has applied high-quality slow-release and controlled-release fertilizers to turf, including slightly soluble organic synthetic nitrogen fertilizers and polymer-coated granular urea or special coated compound fertilizers, which can reduce the number of fertilizer applications. , And to achieve sustained and smooth supply of nutrients. Q: What are the problems with lawn fertilization? Experts: The phenomenon of unbalanced fertilization in lawn management is more. For cold-season lawns, fertilization should be applied in spring and autumn, and fertilization in summer should be controlled especially for nitrogen fertilizers. In addition, in the ratio of N, P, and K fertilizers, there are both nitrogen fertilizers that are over-application of nitrogen, rather than the balanced fertilization of N, P, and K, resulting in the appearance of leaf yellow stems and soft stems; at the same time, there are also inappropriate proportions of compound fertilizer nutrients, such as A large number of general-purpose 45% (15-15-15) compound fertilizers were selected, causing excessive application of phosphate fertilizers. (Sinochem Agricultural University Research Center) Dried Garlic,Dried Garlic Flakes,Dry Garlic Powder,Dehydrated Garlic Powder Jining Yuanheng International Trading Co.,Ltd , https://www.china-garlic-exporter.com