1. Adding fertilizer to soil and adding a large amount of fully decomposed organic fertilizer, supplemented by chemical fertilizer, can not only improve the agglomerate structure of the soil, but also allow the nitrogen in the organic fertilizer to be ammonium nitrogen, through the activity and decomposition of microorganisms. The nitrite nitrogen and nitrate nitrogen are sequentially decomposed, so that the microorganisms in the soil can absorb inorganic nitrogen and synthesize proteins. When the protein synthesized by the microorganism is decomposed, the produced nitrate nitrogen can be used as nutrients for the absorption and utilization of the vegetables.
Second, the vegetable fields newly cultivated due to the local cultivation of vegetables should initially be planted with relatively low requirements for water and fertilizer conditions, such as peas, mustard, and onions. After planting 1-2 è”¬èœ vegetables with relatively low water and fertilizer requirements, after the soil ripening degree is increased and the soil is melted, the vegetables with higher water and fertilizer requirements such as Chinese cabbage, tomato and cucumber are planted.
Third, the rational rotation of the correct rotation can not only make rational use of nutrients and water in the soil, but also give full play to the good role of biological cultivation, fertilization and yield increase, while also reducing the occurrence of pests and diseases and promoting high-quality and high-yield vegetables. In areas where conditions permit, it is possible to implement dishes, food, and crop rotation to improve the ecological conditions of the vegetable fields.
IV. Formulation Fertilization In the process of applying chemical fertilizers in vegetable fields, it is necessary to pay attention to the reasonable combination of nitrogen, phosphorus and potassium fertilizers, avoiding the single application of nitrogen fertilizer, so as not to affect the good growth of vegetables and increase the harmful salts in vegetables.
5. In areas where there are conditions for green manure, when planting vegetables in vegetable fields, it can also be used as short-term green manure. This will not only improve soil fertility, but also achieve organic combination of planting and land raising.
This article URL: Fertilization method for vegetable soil
Breathing Filter- bacterial & virus filter(BVF)
Disposable breathing system filters are intended to reduce the transmission of microbes and other particulate matter in anaesthesia and intensive care unit.
The HME filters addtionally provide the function of warming and humidifying the inspired gas by conserving the exhaled heat and moisture.
The filter can also used in spirometry to protect the spirometer from expired infective droplets.
The use of our filter at patient end can effectively reduce the risk of cross-infection during anaesthesia and intensive care and will protect the anaesthesia and breathing equipment.
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