地下滴灌不同毛管抗负压堵塞性能试验研究
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摘要
通过室内土箱试验,研究单翼迷宫式滴灌带、内镶片式滴灌带及内镶圆柱状滴灌管分别在黏壤土、壤土及砂壤土内的抗负压堵塞性能。研究方法为将地下滴灌系统反复启闭,通过滴头流量变化反映其负压堵塞程度。结果表明:单翼迷宫式滴灌带抗负压堵塞性能较差,在壤土内流量降低34%,发生了堵塞;在砂壤土中流量下降12%,继续试验,发生堵塞的可能较大;内镶片式滴灌带抗负压堵塞性能较好,在3种土壤内都没有出现明显的堵塞现象;内镶柱状滴灌管在黏壤及壤土内流量下降均为12%,若继续试验,有发生堵塞的趋势。该类滴灌管与其余两种滴灌带相比,除滴头流道不同外,其流量最大,说明增大流量并不能明显降低负压堵塞。
The anti-negative pressure clogging performance of single-wing labyrinth drip irrigation belt,inner-mounted drip irrigation belt and internal cylindrical drip irrigation pipe in clay loam,loam and sandy loam soil were studied by indoor soil box test. The research method is that the drip irrigation system is repeatedly opened and closed,and the degree of negative pressure clogging is reflected through the dripper flow changes. The results show that the single-wing labyrinth drip irrigation belt has poor resistance to negative pressure clogging,the flow rate in the loam is reduced by 34%,and blockage occurs; the flow rate in the sandy loam decreases by 12%,and if the test is continued,the blockage may be large; the inner-mounted drip irrigation belt has better resistance to negative pressure clogging; there was no obvious blockage in the three types soil; the flow rate of the columnar drip irrigation pipe in the clay soil and loam is 12%,and there is a tendency of blockage; compared with the other two drip irrigation belts,the drip irrigation pipe has the largest flow rate except for the flow path of the dripper,indicating that the increase of the flow rate does not significantly reduce the negative pressure blockage.
The anti-negative pressure clogging performance of single-wing labyrinth drip irrigation belt,inner-mounted drip irrigation belt and internal cylindrical drip irrigation pipe in clay loam,loam and sandy loam soil were studied by indoor soil box test. The research method is that the drip irrigation system is repeatedly opened and closed,and the degree of negative pressure clogging is reflected through the dripper flow changes. The results show that the single-wing labyrinth drip irrigation belt has poor resistance to negative pressure clogging,the flow rate in the loam is reduced by 34%,and blockage occurs; the flow rate in the sandy loam decreases by 12%,and if the test is continued,the blockage may be large; the inner-mounted drip irrigation belt has better resistance to negative pressure clogging; there was no obvious blockage in the three types soil; the flow rate of the columnar drip irrigation pipe in the clay soil and loam is 12%,and there is a tendency of blockage; compared with the other two drip irrigation belts,the drip irrigation pipe has the largest flow rate except for the flow path of the dripper,indicating that the increase of the flow rate does not significantly reduce the negative pressure blockage.
引文
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[10]NAKAYAMA F S,BUCKS D A.Water quality in driptrickle irrigation:areview[J].Irrigation Science,1991(12):187-192.
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[12]王亚林,朱德兰,张林,等.滴灌毛管泥沙分布与灌水器堵塞试验研究[J].农业机械学报,2014,45(6):177-182.
[13]王心阳,王文娥,胡笑涛,等.泥沙粒径及压力对滴头堵塞性能的影响[J].节水灌溉,2014(10):18-21.
[14]Davis K R.Subsurface drip irrigation:management for longevity[M]∥Jorgensen G S.Subsurface drip irrigation:Theory,practices and applications.CATI Pub,1993:141-144.
[15]Zoldoske D F,Genito S,Jorgensen G S.Subsurface drip irrigation on turfgrass:a university experience[M].CATI,1995.
[16]王荣莲,龚时宏,于健,等.地下滴灌抗负压堵塞的方法和措施[J].节水灌溉,2011(11):70-72.
[17]Schoneman R A,Nightingale HI,Varnell B.Field installation at Britz Farms[M]∥Jorgensen G S.Subsurface drip irrigation:Theory,practices and applications.CATI Pub,1993:147-150.
[18]杨宝中,李秀灵,曹猷界.多孔渗灌管的防堵措施研究[J].灌溉排水,2000,19(2):69-71.
[19]张昊,许迪,程先军,等.几种地下滴管(渗灌)灌水器性能的室内外试验研究[J].灌溉排水,1999,18(4):10-14.
[20]国攀,张毅杰,宋时雨,等.地下滴灌灌水器负压吸泥影响因素试验研究[J].灌溉排水学报,2017,36(1):63-68.
[2]Camp C R,Lamm F R.Irrigation systems,subsurface drip[M].Encyclopedia of Water Science.New York:Marcel Dekker,Inc,2003:560-564.
[3]Phene C J.Drip irrigation saves water[C]∥Proc Conservation 90,The National Conference and Exposition Offering Water Supply Solutions for the 1990s,Phoenix,1990:645-650.
[4]Lamm F R,Stone L R,Manges H L,et al.Optimum lateral spacing for subsurface drip-irrigated corn[J].Transactions of the ASAE,1997,40:1 021-1 027.
[5]Lamm F R,Trooien T P.Subsurface drip irrigation for corn production:A review of 10 years of research in Kansas[J].Irrigation Science,2003,22:195-200.
[6]仵峰,宰松梅,徐建新,等.地下滴灌的应用模式与启示[J].华北水利水电大学学报(自然科学版),2016,37(3):19-22.
[7]PHENE C J.Maximizing water use efficiency with subsurface drip irrigation[J].Irrigation Journal,1993(3):133-140.
[8]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.
[9]程先军,许迪.地下滴灌专用滴头的研制及初步应用[J].农业工程学报,2001,17(2):51-54.
[10]NAKAYAMA F S,BUCKS D A.Water quality in driptrickle irrigation:areview[J].Irrigation Science,1991(12):187-192.
[11]SUAREZ-REY EM,CHOI C Y,MCCLOSEKEY W B,et al.Effects of chemicals on root intrusion into subsurface drip emitters[J].Irrigation and Drainage,2006,55:501-509.
[12]王亚林,朱德兰,张林,等.滴灌毛管泥沙分布与灌水器堵塞试验研究[J].农业机械学报,2014,45(6):177-182.
[13]王心阳,王文娥,胡笑涛,等.泥沙粒径及压力对滴头堵塞性能的影响[J].节水灌溉,2014(10):18-21.
[14]Davis K R.Subsurface drip irrigation:management for longevity[M]∥Jorgensen G S.Subsurface drip irrigation:Theory,practices and applications.CATI Pub,1993:141-144.
[15]Zoldoske D F,Genito S,Jorgensen G S.Subsurface drip irrigation on turfgrass:a university experience[M].CATI,1995.
[16]王荣莲,龚时宏,于健,等.地下滴灌抗负压堵塞的方法和措施[J].节水灌溉,2011(11):70-72.
[17]Schoneman R A,Nightingale HI,Varnell B.Field installation at Britz Farms[M]∥Jorgensen G S.Subsurface drip irrigation:Theory,practices and applications.CATI Pub,1993:147-150.
[18]杨宝中,李秀灵,曹猷界.多孔渗灌管的防堵措施研究[J].灌溉排水,2000,19(2):69-71.
[19]张昊,许迪,程先军,等.几种地下滴管(渗灌)灌水器性能的室内外试验研究[J].灌溉排水,1999,18(4):10-14.
[20]国攀,张毅杰,宋时雨,等.地下滴灌灌水器负压吸泥影响因素试验研究[J].灌溉排水学报,2017,36(1):63-68.