1、 2001 M11 SHUILI XUEBAO11 l :2000-06-06 “:SEv$9 “(G1999011708)SE M S(049725102).Te: B (1962-), 3, 2% , q,p V 3,1V Y j;y A u_2 u_ s7hl 1 P.1 Q4 ,X L i#7 B“ kT,TV eT“s u99 A rT 6 10 .1 eT“s u99 G eT“s u99BW VYV Z_ v hl.yN,5T; 7rKv “ V.m1 l 、 = ;- q dE 1“(2) 2 u| ?MT d 7V7 sh V 32r H, 3B|,1 (ABA), ?_r
2、r O N sh7,8 . 1r 2 3, Ov. =,yN= 3 |$.ABATB s |, r ? ,V % !,M “ b5”.7s u9 Hq/,“ ? V M u =v ,+Y A u1 Av1.0, s u9 1PRDv( .es99 VvBT9,9 VT 9 LC.m4 / ) 9 “A q,g CRDI d9 “ hl ,4“ q Ar.82m4 ) 9 “A q1 m5 9 ) r s.: j S/vl u j r L i 7 、 N ,v 9 j PeterJerieF N “ k,+N.85 I D: 1 jv r , j j r 7b L i. u j M .:S j,
3、 1999, 496. 2 B . j S/ 21 WS j?Z J .l u j, 1998, 1:11-17. 3 N ,q!, B .l Hq/T 9/ Z J .l u j,1998, 2:84-88. 4 , B .d s9 M .: , 1995, 171. 5 B ,fy, 7 . e9 B jB e J .l u j,1997, 1:1-6. 6 Kang S Z, Liang Z S, HuW, Zhang J.Water use efficiency of controlled alternate irrigation in root-divided maize pla-n
4、ts, Agri.Water Management, 1998, 38:69-76. 7 7 , B , .,. es99 3# s qY J .S j S, 1998, 5:88-90. 8 7 , B ,fy,. es99 rm J . j, 1997, 4:63-68. 9 7 , B , .s 1i ABA “ 3WUEY J .T, 2000,2:250-255. 10 Kang SZ, Liang Z S, Pan Y H, Shi P Z, Zhang J.Alternate furrow irrigationfor maize production in arid area J
5、 .Agri.Water Management, 2000, (45):267-274. 11 Cowan I R.Regulation ofwater use in relation to carbon gainon higher plants, In:Lange O L, et al.(Ed.), Physi-ological Plant Ecology M .Springer, Berlin, 1982, 589-612. 12 Jones H G.Interaction and integration of adaptive response to water stress:the i
6、mplications of an unpredictable environ-ment.In:Turner N C, Kramer P J, (Eds), Adaptation of Plants to Water and High Temperature Stress M .Wiley, New York, 1980, 353-365. 13 Zhang J, Davies W J.Antitranspirant activity in the xylem sap of maize plants J .Journal of Experimental Botany,1991, (42):31
7、7-321. 14 North G B, Nobel P S.Radial hydraulic conductivity of individual root tissues of opuntia ficus-induica (L.)miller assoil moisture varies J .Annuls of Botany (London), 1996, (77):133-142. 15 Zhang J, Zhang X P, Liang J S.Exudation rate and hydraulic conductivity of maize roots are enhanced
8、by soil dryingand abscisic acid treatment J .New Phytol., 1995, (131):329-336. 16 B ,fy, y 3.r sT“.r J . 3 , 1999, 3:211-219. 17 Poni S, Tagliavini M, Neri D, Scudellari D, ToselliM .Influence of root pruning andwater stress ongrowth andphys-iological factors of potted apple, grape, peach and pear t
9、rees J .Sci.Hortic.1992, (52):223-226. 18 Tan C S, Buttery B R.The effect of soilmoisture stress to variousfraction of the root system on transpiration.photosyn-thesis and internal water relation of peach seedlings J .Am.Soc.Hortic.Sci., 1982, (107):845-849.Controlled root-divided alternative irriga
10、tionTheory and ExperimentsKANG Shao-zhong1 , PAN Ying-hua1,2 , SHI Pei-ze3 , ZHANG Jian-hua4(1.NorthwestSci-TechUniversityof AgricultureandForestry, Yangling 712100, China;2.Instituteof SoilandWaterConservation, CAS 3.Wuwei Instituteof WaterResources, Wuwei 733000, China;4.HongKongBaptist University
11、, Kowloon Tong, HongKong, China)Abstract:This paper discussed the conception and theoretical basis of controlled root-divided alternative irriga-tion (CRDI)and studiedit systematically through potted maize, field maize and peach roots-divided irrigation.The results show that CRDI could save irrigati
12、onwater underthe conditionof not to reduce theyieldbut the luxurywater used, since the evapor-transpiration can be reducedgreatly .At the same time, the irrigationwater use ef-ficiency is also decreased.It demonstrates that CRDI is a feasible irrigation technique suitable for arid area.Key words:root system;CRDI;water use efficiency86
