灌溉探头埋设深度对成龄葡萄生长特性的影响  

Effects of sensor's laying depth for precision irrigation on growth characteristics of maturate grapes

作　　者：汪羽宁[1,2] 樊军[1] 李世清[1] 曾辰[1] 王全九[1] 

机构地区：[1]西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌712100 [2]广西农业科学院农业科技信息研究所,南宁530007

出　　处：《应用生态学报》2012年第8期2062-2068,共7页Chinese Journal of Applied Ecology

基　　金：国家科技支撑计划项目(2011BAD29B05);黄土高原土壤侵蚀与旱地农业国家重点实验室团队项目资助

摘　　要：为探索合理的灌溉土壤水分探头埋设深度,本文利用不同埋深的土壤水分传感器测量土壤水分含量来控制灌溉,研究其对葡萄生长发育的影响,探讨土壤水分传感器的合理埋设深度.结果表明:利用位于地表以下40cm深处的土壤水分探头(SF40处理)控制灌溉,葡萄的生物学特性、光合作用、产量、水分利用效率高于20cm埋深控制灌溉处理(SF20处理)和常规沟灌处理(CK);SF40的糖锤度虽然稍低于CK和SF20处理,但也接近20%;SF40处理的灌溉水可以入渗再分布到葡萄树根系的主要分布区域.利用20cm和40cm深度土壤水分探头控制灌溉的效果均好于对照,且使用40cm土壤水分探头来控制研究区成龄葡萄灌溉的效果更好.In order to approach the appropriate laying depth of soil moisture sensor to control irrigation amount,the sensors were laid at different soil depth to measure the soil moisture content,with the effects of definite irrigation amount on the growth characteristics of maturate grapes studied.The results showed that using the sensor laying at the soil depth 40 cm（SF40） to control irrigation amount,the biological characteristics of the grapes,including photosynthesis,grape yield,and water use efficiency were superior than those when the sensor was laid at the depth 20 cm（SF20） and under conventional furrow irrigation（CK）.The grape brix degree in treatment SF40 was slightly lower than that in treatments SF20 and CK,but was still near 20%.In treatment SF40,the irrigated water could infiltrate or redistribute in the soil layers where the main roots of the grapes existed.It was suggested that laying soil moisture sensor at the depth 40 cm could better control the irrigation amount for the maturate grapes in the study area.

关 键 词：土壤水分 控制灌溉 葡萄生长指标 

分 类 号：S663.1[农业科学—果树学]