| onventional tillage with bare ground(CTB),conventional tillage with straw incorporated(CTS) and no-tillage with straw mulch(NTS) were studied in the Hexi corridor of Gansu provience.The result showed: on summer fallow NTS stored soil water more than CTB and CTS by 30.62 mm and 23.91 mm,respectively;the winter storage irrigation quotas(WSIQ) should be reduced to 900～1 350 m3/hm2 on winter fallow;evaporation controlling rate arrived 38.1% and 7.3% at winter storage irrigation quotas 975 m3/hm2 and 2 100 m3/hm2,respectively;NTS did not reduce ET during the spring wheat growth stage;yields different between treatments was not significant. |