Advantages of Water-saving Irrigation

Advantages

Scientific irrigation can effectively maintain the good state of water, fertilizer, gas, heat and other phases in soil. It has many advantages, such as water saving, labor saving, energy saving, fertilizer saving, and income increasing. It is gradually recognized and used by everyone.

Canal seepage control

Channel water supply is the main method of irrigation in China.The water utilization coefficient of the traditional soil canal system is generally 0.4-0.5, with only about 0.3 difference. In other words, most of the water is lost through leakage and evaporation.Canal leakage is the main aspect of irrigation water loss.After adopting the seepage control technology, the water utilization coefficient of the canal system can be generally raised to 0.6-0.85, which is 50-70% higher than the original soil canal.Canal seepage prevention is one of the main measures of water saving irrigation in China.

The pipeline

Pipeline water is used to direct water to irrigation in the field to reduce leakage and evaporation losses in the open channel.In developed countries, irrigation water has been largely piped.At present, the pipeline water conveyance in north China's well irrigation area is also promoted and applied rapidly.Commonly used pipes are concrete pipe, plastic hard (soft) pipe and metal pipe.Compared with channel water, pipeline water has the advantages of rapid water transmission, saving water, saving land and increasing production, and the benefits are as follows: the utilization coefficient of water can be increased to 0.95.Power saving 20% 30%;And 2% to 3%;The yield increased by 10%.At present, if the use of low-pressure plastic pipeline water, non - water source construction investment (the same as below), mu investment is 100 -150 yuan. In the places where conditions are available, we should actively develop pipeline water supply.However, the pipeline only reduces the water loss in the process of water transmission, and to truly use water efficiently, it should also be accompanied by field water-saving measures such as spraying and drip irrigation.At present, it is still not able to support the spraying and drip irrigation equipment, so the requirement of developing spray and drip irrigation in the future should be considered for pipe layout and pipe material bearing capacity, so as to avoid waste. Sprinkler irrigation

Sprinkler irrigation USES pipes to deliver the pressurized water to the irrigation area, and disperses it into small water droplets by the sprinkler head, which is sprayed evenly into the field to irrigate the crops.As an advanced mechanized and semi-mechanized irrigation method, it has been widely used in many developed countries.

Micro spray

Micro-jet is a newly developed form of sprinkler irrigation, which is divided into hanging micro-jet and inserted micro-jet.It is particularly suitable for the use of agricultural greenhouses, which are more water-saving than general sprinkler irrigation, and more evenly sprayed on crops.It is delivered through PE plastic pipes and sprayed by micro sprinkler heads for local irrigation.It can be extended into automatic control system.At the same time, fertilizer application is combined to improve fertilizer efficiency.A standard greenhouse micro - jet system equipment investment is generally around 800 yuan.

Drip irrigation

Drip irrigation is the practice of using plastic pipes to deliver water to the roots of crops through holes or drops about 16mm in diameter.It is the most effective method of water-saving irrigation in arid and water-scarce areas, and its water utilization rate can reach 95%.Drip irrigation has a higher water-saving effect than spray irrigation, and can combine with fertilization to double the fertilizer efficiency.It can be used to irrigate fruit trees, vegetables, economic crops and greenhouses. It can also be used to irrigate field crops in dry and short water areas.The disadvantage is that the drip is easy to scale and plug, so water should be strictly filtered.At present, domestic equipment has passed the standard basically, conditional area should develop drip irrigation actively.