Vegetable soils, especially protected vegetable soils, grow the same vegetables year after year, causing soil compaction. The vegetables produced are not of good quality and taste and need to be comprehensively treated in time. First, the performance of soil deterioration 1, the soil becomes hardened: due to a large number of application of chemical fertilizers, ignoring the application of organic fertilizer, soil fertility appears some recession, lack of organic matter. Permeability decreases, aerobic microbial activity declines, soil ripening slows, resulting in soil hardening, vegetable root growth and development, affecting vegetable growth. 2. Increased salinization: After excessive application of chemical fertilizers, the salt ions in the soil increased and the pH value increased. Increase soil salinization, hinder normal root water absorption and affect plant growth. 3, lack of trace elements: vegetables for many years, absorb the soil of zinc, boron, molybdenum, copper, manganese and other trace elements, and no additional application of trace fertilizer, resulting in the gradual reduction of trace elements in the soil, so a serious lack of trace elements, affect The growth and development of vegetables. 4. The shallow layer of live soil is shallow: vegetables are often intercropped and intercropped, and they are mostly planted by hand, and have not been deep-turned with a cattle plow, and the living soil layer has become shallow. 5. Accumulation of pests and diseases: Continuous cropping increases the accumulation of pathogens and pests in the soil. The damage is aggravated, and the roots are thus damaged and rot, and even the whole plant is dead. Due to serious diseases and insect pests and increased use of pesticides, vegetables are contaminated. Second, the deterioration of soil governance 1, crop rotation change: a piece of land not to be the same species of vegetables, crop rotation can be planted another kind of vegetable species, such as melons and onions rotation, can reduce the occurrence of pests and diseases, reduce the toxic effects of toxins . 2. Addition of organic fertilizers: The application of organic fertilizers can improve the structure of soil aggregates, enhance soil permeability and water retention and fertilizers, and make the soil loose and fertile, alleviate soil salinization, promote the development of vegetable roots, and increase their resistance to disease and disease. ability. 3. Appropriate leisure: After planting for many years, you can grasp the season and appropriate leisure land, such as open-air vegetable plots, can use winter recreation to deepen the soil, freeze soil, eliminate pests and diseases, and restore soil strength. 4. Applying micronutrients: can be used as base fertilizer or as top-dressing fertilizer to supplement the content in the soil. As a base fertilizer, zinc fertilizer (zinc sulfate) Mushi 1-1.50 kg, boron fertilizer (borax) 0.3-0 .50 kg, molybdenum (ammonium molybdate) 0.10-0.20 kg, copper fertilizer (copper sulfate) 1-2 kg, manganese fertilizer (manganese sulfate) 2-3 kg. Top dressing fertilizer: Zinc sulfate can be used in 0.05%-0.20% concentration, borax can be used in 0.10%-0.25% concentration, ammonium molybdate can be used in 0.02%-0.05% concentration, copper sulfate can be used 0 .02%-0.05% concentration, manganese sulfate available 0.10%-0.20% concentration. 5, deep-turning the land: the use of time intervals in the cultivation of each vegetable deep ploughing, intercropping can not be deep plowing cattle plough, can be used to dig deep to dig the ground, thickened layer of mature soil, and enhance soil water retention and fertilizer capacity.
Solvent Recovery Machine industry wide application, uses a wide range of production and processing industry basically will be used, kinds of solvent solvent recovery machine Recyclable are many, Calstar® is a solvent recovery machine equipment, it can help many enterprises to save most of the money, reduce the purchase cost of solvent, solvent recovery machine was born to the society has an important significance to the environment, reduce the waste of resources, and solve the environmental pressure.
At present, to promote energy saving and emission reduction, the development of low-carbon economy has become the main theme of the development of the world economy, especially for China which is a relative shortage of resources per capita, serious ecological damage power development, in the huge pressure of energy and environment, promote energy-saving emission reduction, it is imperative to develop low carbon economy. In the Copenhagen world climate conference held in December 2009, the Chinese government commitment to the 2020 unit of GDP carbon emissions than in 2005 decreased by 40% ~ 45%. In the future, all walks of life will move towards low energy consumption, low pollution and low emission direction, the development of flexible packaging industry can not be contrarian. Soft packaging industry as one of the more serious energy consumption and pollution, in the face of increasingly prominent energy and environmental problems, should assume more social responsibility, to contribute to energy saving and emission reduction.
In China to use a large number of organic solvents, emissions of a large number of high concentration of organic waste gas is an important cause of environmental pollution caused by the soft packaging industry. At the same time, the evaporation of organic solvent in the process of use also caused the problem of indoor pollution and safety. With the increase of people's awareness of environmental protection and national environmental protection, organic emission problem of the soft packaging industry has aroused social attention, soft packaging enterprises also obviously feel the increasing pressure of environmental protection, high discharge mode used by now has been difficult to project eia. Moreover, the future of national legislation in the field of environmental protection will be more stringent, flexible packaging enterprises must be a pressing matter of the moment to take effective measures to reduce emissions and energy consumption of organic waste gas, in accordance with the national energy-saving emission reduction targets
Plastic Products Solvent Recovery Machine
Plastic Products Solvent Recovery Machine
SHENZHEN KUANBAO ENVIRONMENTAL EQUIPMENT CO., LTD , https://www.calstarkb.com