摘要
为解决滴灌过程中地下滴灌系统的堵塞问题，设计了新型防堵塞地下滴灌系统并阐述了其工作原理、设计要求，分析并确定地下滴灌系统水压为15～25kPa，出水孔间距为300mm，防护管内壁与毛管的外壁距离为40mm时，灌水均匀度可达到85％以上；通过该系统对酿酒葡萄赤霞珠生长的影响试验结果表明，防堵塞地下滴灌与膜下滴灌、普通滴灌相比能保持20～60cm深度土壤含水率的稳定性，明显提高植株根冠比，增加有效根表面积，加快根系周转与更新，进而增强植株根系对水分和养分的吸收能力。
In order to solve the problem of congestion in subsurface drip irrigation and to promote application of subsurface drip irrigation to forest or fruit industry, the design principle and the design requirements of model anti-clogging of subsurface drip irrigation system were proposed. These data of the system were obtained that the system pressure was 15 ~ 25 kPa and the plughole spacing was 300 ram, and that the distance between inner wall of protective tube and out wall of capillary was 40 ram and the irrigation uniformity is more than 85% through experiment. Effects on the growth of Cabernet Sauvignon by the system show that anti-clogging subsurface drip irrigation （SDI） and drip irrigation under plastic film （MDI） compared with conventional drip irrigation （DI） can maintain the stability of soil moisture content in 20 -60 cm, and increase ratio of root to shoot and the effective root surface area, so as to accelerate root turnover and renewal, and enhance the absorptive capacity of plant roots to soil moisture and nutrient.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2014年第3期124-128,共5页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金资助项目(31360464)
新疆生产建设兵团资助项目(2013BA003)
新疆研究生创新项目(XJGR12013061)
关键词
地下滴灌
防堵塞
设计
性能试验
Subsurface drip irrigation Anti-dogging Design Performance experiment
