Studies On The Application Effect Of Infiltration Irrigation And Micro Sprinkler Irrigation On Vegetable Producing In Greenhouse

The water resources in our country are not balanced in time and space distribution,there are also many problems such as waste and pollution.With the development of modern agriculture,irrigation area continues to increase,the current situation of water resources supply is becoming more and more serious.Traditional vegetable planting generally uses a lot of fertilizer,it causes a waste of fertilizer and also much damage to farmland soil.Based on the analysis of the investigation of Shanghai suburban vegetable planting fertilizer application,this study analyses application effect of infiltration irrigation and micro sprinkler irrigation in greenhouse vegetable cultivation.The test objects are Tomato and Pakchoi,and the tests investigate effects of infiltration irrigation and micro sprinkler irrigation on the growth,nutrition quality and soil chemical properties of the greenhouse vegetables.The results are as follows:1.The investigation of fertilizer and water management in Shanghai showed that micro sprinkler irrigation and drip irrigation can effectively save the irrigation water.Compared with traditional irrigation,the average water saving is more than 60%.2.Infiltration irrigation can effectively promote the growth of Tomato in Greenhouse,plant height increased an average of 14.37 cm,the content of Vc and soluble sugar increased 20.8% and 17.9%,acidity decreased significantly and the taste of tomato increased obviously,also production increased by more than 12%.Infiltration irrigation is suitable for the greenhouse cultivation of aubergine vegetables such as tomato.3.Infiltration irrigation has a poor performance on Pakchoi cultivation in greenhouse.It's not obvious to enhance the growth of Pakchoi,the yield decrease by 16.5%,and the nitrate content in soil increased by more than 38%,quality of Pakchoi is relatively poor.The problem of uneven irrigation will occur.Infiltration irrigation is not suitable for the greenhouse cultivation of leafy vegetables such as Pakchoi.4.Micro sprinkler irrigation can make the yield of Pakchoi increase by 14.1%,the contents of soluble protein and soluble sugar increased by 44.7% and 123.5% respectively,and the content of nitrate in Pakchoi decreased by 7.7%,the content of nitrate in soil decreased by 37.3%,the application effect of Pakchoi in greenhouse was significantly better than that of infiltration irrigation.Micro sprinkler irrigation fits for the greenhouse cultivation of leafy vegetables such as Pakchoi.5.Water soluble fertilizers have good water solubility,it can spray into the soil with the irrigation water,conducive to crop absorption and promote the growth of the crops.With the help of water soluble fertilizers,the content of Pakchoi greenhouse soil nitrate reduced by more than 30%.Combined with water soluble fertilizer,infiltration irrigation and micro sprinkler irrigation can further enhance the utilization efficiency of water and fertilizer,thereby further improve the quality and yield of crops.