Analysis on the Effects of Technical Parameters of Grape Drip Irrigation on Soil Salt Content Distribution in Arid Areas of Xinjiang

hortage of water resources and soil salinization or alkalization have become as the main factors restricting agricultural development in Xinjiang.In this study,a field experiment on grape drip irrigation in arid areas of Xinjiang is carried out,and the effects of the main technical parameters of drip irrigation on grape yield are analyzed.The results show that soil salt content increases with increasing the distance away from drippers under all the treatments after irrigation in growth season,and the effect of leaching soil salt is in inverse proportion to the irrigation frequency.Horizontally,there is no soil salt accumulation within an extent of 60 cm away from drippers in drip irrigation under plastic film.When irrigation is done every 3 days without mulching plastic film,the leaching effect under frequent irrigation is obvious,and soil salt accumulation does not occur in growth season.After quantitatively analyzing the soil salt content in taproot rhizosphere,the optimal leaching mode and irrigation requirement are determined,that is,irrigation should be done every 3 days,and the irrigation requirement is 209 m3·hm-2.