Experiment Of Drip Irrigation Under Plastic File For Tomato And Grape In Helio Greenhouse

This trial took tomatoes and grapes as samples. According to the psychology characters and water requirement of the tomatoes and the grapes and refers to local irrigation experience and micro-irrigation standard, the suitable soil moisture ratio can be gotten and the height of the designing moist layer can be attained too. Meanwhile,this paper studied water requirement, water requirement principle, outputs as well as growth changes on tomato under contrast the dip irrigation under the plastic film to the furrow irrigation in the hothouse; and studied irrigation amount, outputs as well as growth changes on grape under contrast the dip irrigation under the membrane to the furrow irrigation in the hothouse. It could just attain tentative idea because there are only one year.1 Major results of tomato:1.1 The nutrient substance of the tomatoes was greatly affected by the watering content. The stubs height, the stems radius and the number of the leaves increased obviously with the increasing of the watering content in the same irrigation method. The average height of the tomatoes in drip irrigation was higher than that in the ditch irrigation. And so was the average radius.1.2 The quality of the tomatoes was improved by the drip irrigation in the greenhouse. Its yield was obviously increased which was compared with ditch irrigation. Plant disease and insect pests were obviously decreased. The composite economic results improved notable. The results of the saving water were especially obvious. It would save water about 67.5% and improved yield about 59% which was compared with ditch irrigation.1.3 According to the experiment, it could be found out that the suitable irrigation quota of the tomatoes which was irrigated by drip irrigation in the greenhouse is3750m3/ha, and irrigating water quota should be controlled by150~225m3/ha. The indexes of the drip irrigation was following, the earlier stage planning moisture layer height was 20cm, soil moisture content was 50%~60%; in the middle stage they were 40cm and 70%~80%; in the later stage they were 30cm and 60%~70%.2 Major results of grape:2.1 The phenological phases of grape was advanced ,the fruit setting ratio and the bud geminatong ratio were all raised in the drip irrigation under the membrane than the furrow irrigation.