摘要
针对贺兰山东麓酿酒葡萄种植中存在大水沟灌水分利用效率低,滴灌技术应用缓慢等问题,试验设计了3个水分处理(分别以0~60 cm土层灌前土壤田间持水率的60%,70%和80%作为各处理灌水控制下限),通过田间试验,研究了贺兰山东麓地区砂质壤土条件下不同监测深度、监测点的土壤含水率变化特征。结果表明,滴灌葡萄土壤水分受灌水的影响较大,灌水下限不同,土壤水分也存在明显的差异,主要随着灌水下限的增大而增大;3年生幼龄葡萄,距滴头20 cm处葡萄根系密集分布层土壤水分下降很快,葡萄植株的生长对该处土壤水分的需求高于距滴头40 cm的土壤水分;灌水下限70%田间持水率的处理在垂直剖面上土壤水分分布较合理,灌水间隔时间为5 d,推荐作为该地区葡萄控制灌溉的下限。
Aiming at the problems of low water use dfficiency in flood irrigation and slow application of drip irrigation technology in wine grape plantation, the eastern foot of Helan Mountain, 3 water percent were tested and designed to treat this problems, the lower limit of irrigation water content are set as 60%, 70% and 80% between depth of 0 to 60 cm field before irrigation. Soil moisture changing characteristics of different monitoring points and depth were analyzed under the condition of sandy loam soil in the eastern Helan Mountain area. The test results show that grape soil moisture is impacted obviously by drip irrigation, obvious differences of soil moisture was relation to the lower limit of irrigation water content, mainly increasing with the increasement of lower limit of irrigation. For three years old young grape, soil moisture decreased quickly from dripper20 cm, where is densely distribution layer of grape roots, and there is higher soil moisture demand than 40 cm from dripper in grape plant growth. The water distribution of soil moisture in the vertical section of lower limit of irrigation is more reasonable,and the time of irrigation interval is 5 days, it can be recommended as the lower limit of grape control irrigation in this area.
出处
《宁夏工程技术》
CAS
2016年第2期162-166,175,共6页
Ningxia Engineering Technology
基金
宁夏自然科学基金资助项目(NZ14215)
水利部科技推广计划项目(TG1506)
关键词
滴灌
土壤水分
酿酒葡萄
贺兰山东麓
drip irrigation
soil moisture
wine grapes
eastern foot of Helan Mountain
