Plastic film cover crop cultivation technology
The cultivation of mulch “concave†cover crops is based on the mulching of the mulch. The original flatland was film-covered and replaced with a ridge and furrow “concave†type coating, and the crop was cultivated on the slope or ridge back. The film “concave†type cover can fully accept rainwater and implement the membrane irrigation technology. It can be completed without increasing the investment of the plastic film. It is a new technology with simple technology, low cost and significant benefits. First, the method of mulching with plastic film The method of “concave†covering the mulch is to make the arable land to be covered with ridges and ridges, and to form plastic pellicles at the bottom of trenches, slopes and even some trenches. On the back of the ridge, the specifications of the ditch are based on the crop. Rainfall or irrigation water rises to the soil near the crop when the “concave†bottom of the cover film rises to the seedling hole, moistens the root of the crop, and satisfies the moisture required for crop growth and development. The size of the seepage hole is determined according to the amount of water required by the soil and the planting crop. Generally, the sandy soil and the crop with large water demand have a large pore size and closely spaced pores; the sticky soil and the crop with a small water requirement are the opposite. Second, the scope of plastic film concave cover film "concave" type cover, is a form of plastic film coverage, so all places where the implementation of plastic film cultivation and crops, can promote the use. Especially in high cold, drought, early spring water shortage, low temperature, large evaporation, large slope, easy soil consolidation, poor water retention and fertility is more suitable for promotion. Over the past few years, the use of this technology in Wenxi, Wenxi and other places in Yuncheng in the spring of cotton cultivation, winter winter garlic cultivation, etc., can overcome the cold in early spring, drought conditions in dry crop areas, irrigation water in agricultural irrigation areas. Third, the advantages of plastic film coverage 1, irrigation water to reduce the film "concave" cover, for water crops, with the membrane irrigation conditions, irrigation water flowing through the membrane when the seedlings enter the hole, wet soil near the root zone of the crop. Similar to drip irrigation, it belongs to local irrigation. After irrigation, the mulching film can also play a role in inhibiting evaporation. Reduces the evaporation between the trenches and the deep seepage of water. According to the survey, mulching "concave" cover membrane irrigation irrigation than the trench about 30%. In water-poor areas, the land surface will be replaced by irrigation with furrow irrigation, and the use of low-pressure pipelines for water transportation can increase the utilization rate of water from 60% to over 80%. 2. Increased utilization rate of rainwater For rain-fed agriculture relying on food for the days, mulch-covered “concave†type cover can fully absorb rainfall, and in particular, ineffective rain with minimal rainfall can become effective rain, which improves the utilization rate of rainwater. In the dry years, the mulching of the mulching film and the uncovered control field crops have obvious effects and yield increase benefits. In the rainy season, the mulching of the mulch also has the effect of preventing rain and draining. Due to the strong airtightness of the film, the turf film “concave†type can circulate the limited water in the soil between the soil and the mulching film, effectively control the evaporation of the soil moisture, make the soil moisture stable, and keep it moist for a long time. Root growth. 3. Product cost reduction The film “concave†type cover irrigation is water flowing on the mulching film covering crops. It is a multi-purpose membrane and basically does not increase the input of irrigation. Therefore, it is one of the least-invested water-saving irrigation technologies; the mulch “concave†type. Coverage can fully absorb rainwater, can reduce the number of additional irrigation, reduce irrigation costs; film "concave" cover, irrigation water through the seedling hole moist soil near the crop, under the irradiation of sunlight, a lot of water circulating under the film, It is possible to avoid soil compaction due to flooding or heavy rain exposure, which can reduce human investment in cultivator. 4. The increase of soil fertility has the effect of warming and moisturizing as a result of the plastic film covering, so it is beneficial to the proliferation of soil microorganisms, so that the nutrients are continuously used for the growth and development of crops. It has been determined that the available nitrogen can increase by 30-50%, the potassium by 10-20%, and the phosphorus by 20-30%. At the same time, the plastic film can also reduce nutrient leaching, loss and volatilization, and increase the utilization of nutrients. 5, cover technology simple film "concave" cover, is to cover the mulch in the well done furrows, and the cotton mulch flat cover only a simple improvement. The irrigation method on the membrane is the same as that for furrow irrigation. It is easy and convenient to cover the film with water, and one can see it. Everyone can do it. It is a new technology worthy of promotion in arid and dry areas. HEBEI PINGLE FLOUR MACHINERY GROUP CO., LTD , https://www.plrollermill.com