Effects Of Sprinkler Irrigation And Drip Irrigation On Soil Moisture Changes And Delayed Grape Fruit Characters

This experiment took the delayed grapes as the object,and studied the effects of two different irrigation methods,drip irrigation and sprinkler irrigation,on soil water content and grape fruit properties.The grape variety is an excellent line of‘10-6’,with a row spacing of 0.2 m×1.8 m,a‘T’-shaped wide-top single hedge frame,and a‘Y’-shaped pruning.During the production period,each plant retains one vine,and each vine produces two fruit branches for fruiting,and each fruit branch bears 1 ear of grapes.The maximum field water holding capacity measured by the ring knife method was 21.23%,and the soil bulk density was 1.46 g/m3.In the drip irrigation treatment area,two drip irrigation pipes were laid on both sides of the plant at a distance of 30 cm from the plant for each row of grapes.In the sprinkler irrigation treatment area,a micro-spray belt was laid between the two rows of grapes.Irrigation was carried out on September 29,at which time the grape plants had finished fruiting branches,toppings and fruit set.The specific test results were as follows:1.Through the investigation of the root system of four-year-old facility grapes,after 4 years of growth and development,a large number of fibrous roots spread throughout the border.2.With a border area of 9 m~2and an irrigation quota of 0.7 t,the time required for drip irrigation to drip all the water into the soil was 4～5 times that of sprinkler irrigation.3.In the case of the same irrigation quota,the 0～60 cm soil layer,after sprinkling irrigation for the first day after irrigation,the water can effectively and evenly penetrate the entire border surface,and the soil moisture content in all positions of the entire border surface was basically the same.After drip irrigation,the most effective irrigation range exceeds 20 cm,and the water radiation range is within 40 cm after the first day of irrigation;fter the 7th day of irrigation,the most effective irrigation range of drip irrigation was less than 40 cm,and the water radiation range was less than 60cm.The closer to the drip hole,the higher the soil moisture content.Therefore,to make the soil moisture content of the entire border surface reach the best effect,so that the grape roots in the entire border surface absorb water evenly,a drip irrigation pipe should be laid every 80 cm.In this experiment,the drip irrigation treatment has no effect on the middle position of the border surface.In addition,during the entire irrigation cycle,the soil water content of sprinkler irrigation was higher than that of drip irrigation.4.The single-grain weight and ear weight of sprinkler irrigation grapes were significantly higher than that of drip irrigation.5.There was no significant difference in soluble solids between sprinkler irrigation and drip irrigation.6.The yield per mu of sprinkler irrigation grapes was higher than the yield per mu of drip irrigation grapes.