【摘要】 组合式滴灌模式下,地下和地面滴灌带湿润锋交汇所需时长平均为23.8h;地面滴灌带湿润锋水分交汇所需时长平均为14.4h。灌水历时8h处理土壤存在水分无效截面;灌水历时10h处理土壤有效截面范围宽40cm左右,长120cm,土壤有效截面水分分布范围更利于葡萄根系的生长;灌水历时12h处理土壤有效截面宽50～60cm,长120cm,但地下滴灌带下方60cm处土壤含水率超过田间持水率。组合式滴灌下以灌水历时10h为宜。更多还原

【Abstract】 Characteristics of soil water movement under united drip irrigation were studied.The results showed that:under the united drip irrigation,the intersection time of wetting distance in underground and surface drip irrigation zones was 23.8hwhile the intersection time in surface drip irrigation zones was 14.4h.With irrigation times of 8hand 10h,soil width of the effective cross-section was 40cm and length was 120cm;Generally the soil effective cross-section range was more conducive to the grape root growth,and there was no deep percolation.With irrigation time of 12,soil width of the effective cross-section was 50～60cm and length was 120cm;but soil moisture below 60cm exceeded field capacity under the underground drip tape.Irrigation time of 10hwas appropriate under united drip irrigation.更多还原