Seasonal vegetables fertilization 4 points
Select fertilizer type Fertilize according to the type of vegetables. Cabbage vegetables such as Chinese cabbage and greens require more nitrogen, and quick-to-use high-nitrogen compound fertilizers should be used. Radish, potato, and other root vegetables should be re-applied with high-potassium fertilizers; cucumbers, peppers, tomatoes, and other fruits. Vegetables, in addition to nitrogen fertilizer, phosphorus, potash fertilizer demand is also larger, base fertilizer should use nutrient balanced compound fertilizer, and apply organic fertilizer. Reuse organic fertilizer. The application of organic fertilizers can not only improve soil physical, chemical and biological characteristics, ripen the soil, fertility and fertility, improve the quality of products, reduce the content of nitrates and nitrites in vegetables, increase the content of vitamin C, and increase the sugar content of fruits and melons. In addition, organic fertilizers can produce carbon dioxide during decomposition and utilization, and can accumulate “gas fertilizers†in greenhouses, which can improve the photosynthesis of vegetables and increase the production of vegetables. However, in order to prevent ammonia and nitrous acid poisoning and the spread of germs, the applied organic fertilizer must be decomposed, especially chicken manure, requiring a high degree of maturity and should be applied in advance. Determine the amount of economic fertilizer It was determined that the amount of economic fertilizer was calculated based on the level of vegetable production and soil fertility. At present, most of the vegetable field fertility levels should be controlled by nitrogen, phosphorus, potassium, targeted micro-fertilizer is the principle of fertilization. For vegetables with a short growing period or with roots, stems and leaves as the harvest, 1/2-1/3 of nitrogen fertilizer, all of the phosphorus, potassium, and trace fertilizers can be used as base fertilizer, and another 1/2-1/3 of nitrogen fertilizer is used as top dressing. Application. For fruits and vegetables, 1/3 nitrogen fertilizer, 2/3 phosphorus potassium fertilizer and all trace fertilizers can be used as basal fertilizer, and 2/3 of nitrogen fertilizer and 1/3 of phosphorus and potassium fertilizer can be used as top-dressing, which can be applied in different stages of vegetative growth and reproductive growth of vegetables. . Choose fertilizer type Anti-season vegetables generally should not use chlorine-based fertilizers, such as potassium chloride, ammonium chloride, etc., because the chloride ions can reduce the starch content in vegetables, so that the quality is degraded, and residues in the soil can cause soil compaction. Anti-season vegetables are also not suitable for the use of volatile ammonium nitrate, ammonium bicarbonate, and other nitrogen fertilizers. If used, it is best to apply the ditch to deep layers of the soil. Anti-season vegetables should also be given less magnesium sulphate and ferric sulphate fertilizers because sulfate ions are not easily absorbed by vegetables and remain in the soil, impeding the growth of vegetables. For fertilizers that are easily soluble in water, they are better when applied to the field with irrigation water. Potassium dihydrogen phosphate, urea, borax, and rare earth microelement fertilizers can be sprayed on the foliar surface in the manner of extra-root fertilizer, but the best spraying period and spray concentration should be mastered. Reasonable fertilization method The basal fertilizer is best applied one week before the colonization of vegetables and should be mixed well with the soil. Fertilizer can be planted 7-10 cm away from the plant ditch or hole chase, top dressing immediately after top dressing, watering, do not sprinkle fertilizer directly on the ground or plants, so as to avoid volatile fertilizer or burn vegetable seedlings. The top-dressing fertilizer should be in the peak period of vegetables need fertilizer and vegetable growth, it is best to choose the cloudy or evening time, try to spray the fertilizer solution to the back of the new leaves and leaves, in order to facilitate the absorption of vegetables. NVR Kit China's domestic level
Video monitoring is mainly used in the communities closely connected with families in the industry field, but it is still less used for home monitoring. Under the guidance of the policy of safe cities and safe families, the domestic family monitoring will begin to rise with the continuous improvement of family network environment, the improvement of users' consumption ability, the growth of security awareness, and the increase of independent living families. The integrated video monitoring that integrates limited, wireless access and linkage alarm will become a development trend. Full service operation has arrived. Operators will certainly provide users with wired and wireless diversified technical monitoring means. Through business integration, they will bring users endless monitoring services. Monitoring realizes the discovery and prevention of family safety, and also reflects family care. In addition, efforts should be made to solve the problem of security. Therefore, family monitoring needs to gradually increase some new functions and applications such as linkage alarm and security services, such as emergency help, interaction with public security, medical care, housekeeping, and calling.
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China Telecom's Global Eye and the former China Netcom have developed remote video monitoring in conditional households. For example, the wide view video monitoring business has been launched in China Netcom's Shanxi, Shandong, Jilin, Zhejiang, Henan and other provincial companies in the early stage, and has been widely welcomed by customers. The wide view business has developed rapidly. In the first half of this year, only Hubei Netcom's "wide view - God's Eye" business has developed more than 500 households. With the rapid development of family information technology, users' demand for family security is becoming stronger and stronger, and the broad horizon will maintain rapid development. China Mobile is also developing mobile MMS monitoring represented by "Handyantong", and 3G video monitoring is also being tested and commercially tested. It is difficult to develop and promote home video surveillance because of the huge data and signal flow relying on the network and the need to deploy home gateways and cameras.