再生水灌溉对冬小麦根冠发育及产量的影响  

Effects of irrigation with reclaimed water on root system and yield of winter wheat

作　　者：马福生[1] 刘洪禄[1] 吴文勇[1] 郝仲勇[1] 许翠平[1] 马志军[1] 

机构地区：[1]北京市水利科学研究所,北京100044

出　　处：《农业工程学报》2008年第2期57-63,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：北京市"十一五"重大科技攻关课题(D0706007040291);国家"863"计划项目(2006AA100205)

摘　　要：以冬小麦为研究对象,研究了再生水灌溉对冬小麦株高、叶面积、根系发育和产量的影响,试验设置清水处理1(T1)、再生水处理2(T2)、先用再生水后用清水的处理3(T3)和先用清水后用再生水的处理4(T4),结果表明:在p=0.05时,T1、T2和T4间拔节期后的冬小麦株高和单株总叶面积无显著性差异。收获时不同处理冬小麦的根长密度、根重密度和单位体积土壤内的根表面积均随着土层深度的增加而减小,在p=0.05时,1 m深土层内不同处理间的上述指标无显著性差异。再生水灌溉并未影响收获时冬小麦根系的主要分布深度,各处理0～70 cm土层范围内根系占根系总量的95%左右,且0～20 cm土层是冬小麦根系的主要分布层。冬小麦产量受到灌水量、灌水水质状况等多种因素的共同影响,除2001～2002年再生水比清水处理增产22.3%外,其余试验结果均表明,再生水灌溉对冬小麦产量无显著性影响。The effects of irrigation with reclaimed water on height, root and yield of winter wheat were studied in this paper. Treatments included continuous irrigation with normal water（T1）, continuous irrigation with reclaimed water（T2）, irrigation with reclaimed water from Oct, 2000 to Oct, 2003 then irrigation with normal water from Oct, 2003 to Jun, 2006（T3） and irrigation with normal water from Oct, 2000 to Oct, 2003 then irrigation with reclaimed water from Oct, 2003 to Jun, 2006（T4）. Experimental results illustrated that the height and total leaf area for per plant had no significant difference between treatments. The root length, root weight and root surface area in unite volume soil all decreased with the increase of soil depth for all treatments, and above indexes had no significant difference between treatments in the extent of 0～100 cm soil（p=0.05）. Irrigation with reclaimed water did not influence the depth of main root, the root distributed in 0～20 cm soil mainly and the root quantity in 0～70 cm soil was the 95 percent of total root quantity. According to experimental results during 2000～2006, treatments that irrigated with reclaimed water had no significant influence on the yield of winter wheat except the experiment during 2001～2002. Compared with the treatment that irrigated with local ground water, the yield of winter wheat was increased by irrigation with reclaimed water about 22.3% during 2001～2002.

关 键 词：再生水 北京 灌溉 冬小麦 根系 

分 类 号：S273.5[农业科学—农业水土工程]