紫花苜蓿地埋滴灌条件下滴灌带堵塞率研究
|
摘要
滴头堵塞是地埋滴灌技术面临的关键问题之一,通过田间对比试验研究紫花苜蓿地埋滴灌条件下施肥次数、施肥量、滴头设计流量、滴灌带埋深等因素对滴头堵塞的影响。结果表明:在使用2 a后的滴灌带中,完全堵塞的占1.9%,发生堵塞的滴头占3.6%,总体堵塞程度为轻度;试验中发现滴灌带埋深对滴灌带滴头流量影响不明显,施肥次数、施肥量对滴灌带堵塞情况影响不明显;滴灌带滴头设计流量增加,滴头实际流量折损率增加,滴头流量为3.0 L/h时滴头流量折损率为10.33%,是流量1.38 L/h时流量折损率的3倍。
To study alfalfa buried under the condition of drip irrigation fertilization, fertilization rate, drop head design flow, drip irrigation belt buried depth on the influence of the drip irrigation belt drop head congestion, preliminary to the following conclusion: use 2 years later, the clogging of the drop head accounted for 3.6%, 1.9% completely blocked. So the drip irrigation belt that use 2 years blockage to a lesser degree. Trials found that drip with buried depth of drip irrigation belt head drops flow effect is not obvious in fertilizing times, fertilizer rate is not obvious effects on drip irrigation belt congestion; With the increase of drip irrigation belt design head flow, drip drop head with actual flow lower percentage is increasing. Design flow of 3.0 L/h drops head flow lower percentage is 10.33%, is a design flow of 1.38 L/h drop head flow 3 times lower percentage.
To study alfalfa buried under the condition of drip irrigation fertilization, fertilization rate, drop head design flow, drip irrigation belt buried depth on the influence of the drip irrigation belt drop head congestion, preliminary to the following conclusion: use 2 years later, the clogging of the drop head accounted for 3.6%, 1.9% completely blocked. So the drip irrigation belt that use 2 years blockage to a lesser degree. Trials found that drip with buried depth of drip irrigation belt head drops flow effect is not obvious in fertilizing times, fertilizer rate is not obvious effects on drip irrigation belt congestion; With the increase of drip irrigation belt design head flow, drip drop head with actual flow lower percentage is increasing. Design flow of 3.0 L/h drops head flow lower percentage is 10.33%, is a design flow of 1.38 L/h drop head flow 3 times lower percentage.
引文
[1] 寇丹,苏德荣,吴迪,等.地下调亏滴灌对紫花苜蓿耗水、产量和品质的影响[J].农业工程学报,2014,30(2):116-123.
[2] 张树振,张鲜花,隋晓青,等.地下滴灌苜蓿地土壤水分分布规律[J].草业科学,2015,32(7):1 047-1 053.
[3] 孟季蒙,李卫军.地下滴灌对苜蓿的生长发育与种子产量的影响[J].草业学报,2012,21(1):291-295.
[4] 夏玉慧,汪有科,汪治同.地下滴灌埋设深度对紫花苜蓿生长的影响[J].草地学报,2008,16(3):298-302.
[5] 徐文婷,苏德荣,刘自学,等.地下滴灌条件下水钾耦合对紫花苜蓿的影响[J].中国草地学报,2014,36(3):52-56.
[6] 吴文奇,夏玉慧,张志芬,等.地下滴灌技术在紫花苜蓿种植上的应用研究[J].节水灌溉,2009,(4):14-17.
[7] 刘燕芳,吴普特,朱德兰,等.滴灌条件下水的硬度对滴头堵塞的影响[J].农业工程学报,2015,31(20):95-99.
[8] 李久生,陈磊,栗岩峰.地下滴灌灌水器堵塞特性田间评估[J].水利学报,2008,39(10):1 272-1 278.
[9] 仵峰,范永申.地下滴灌灌水器堵塞研究[J].农业工程学报,2004,20(1):80-83.
[10] 于颖多.地下滴灌施药调控根系分布防止灌水器堵塞研究[R].北京:中国水利水电科学研究院, 2007.
[11] 王荣莲,龚时宏,王建东,等.地下滴灌抗负压堵塞的试验研究[J].灌溉排水学报,2005,24(5):18- 21.
[12] GB/T17187-2009,农业灌溉设备滴头和滴灌管技术规范和试验方法[S].
[13] GB/T19812.3-2008,塑料节水灌溉器材内镶式滴灌管、带[S].
[14] ISO/TC23/SC18-2003,Clogging test methods for emitters[S].
[2] 张树振,张鲜花,隋晓青,等.地下滴灌苜蓿地土壤水分分布规律[J].草业科学,2015,32(7):1 047-1 053.
[3] 孟季蒙,李卫军.地下滴灌对苜蓿的生长发育与种子产量的影响[J].草业学报,2012,21(1):291-295.
[4] 夏玉慧,汪有科,汪治同.地下滴灌埋设深度对紫花苜蓿生长的影响[J].草地学报,2008,16(3):298-302.
[5] 徐文婷,苏德荣,刘自学,等.地下滴灌条件下水钾耦合对紫花苜蓿的影响[J].中国草地学报,2014,36(3):52-56.
[6] 吴文奇,夏玉慧,张志芬,等.地下滴灌技术在紫花苜蓿种植上的应用研究[J].节水灌溉,2009,(4):14-17.
[7] 刘燕芳,吴普特,朱德兰,等.滴灌条件下水的硬度对滴头堵塞的影响[J].农业工程学报,2015,31(20):95-99.
[8] 李久生,陈磊,栗岩峰.地下滴灌灌水器堵塞特性田间评估[J].水利学报,2008,39(10):1 272-1 278.
[9] 仵峰,范永申.地下滴灌灌水器堵塞研究[J].农业工程学报,2004,20(1):80-83.
[10] 于颖多.地下滴灌施药调控根系分布防止灌水器堵塞研究[R].北京:中国水利水电科学研究院, 2007.
[11] 王荣莲,龚时宏,王建东,等.地下滴灌抗负压堵塞的试验研究[J].灌溉排水学报,2005,24(5):18- 21.
[12] GB/T17187-2009,农业灌溉设备滴头和滴灌管技术规范和试验方法[S].
[13] GB/T19812.3-2008,塑料节水灌溉器材内镶式滴灌管、带[S].
[14] ISO/TC23/SC18-2003,Clogging test methods for emitters[S].