大棚番茄土壤水分灌溉上限研究.pdf

1、西帚蟲學(xué)碩士學(xué)位論文Y937戳薯大棚番茄土壤水分灌溉上限研究論文作者：劉海利指導(dǎo)教師：羅慶熙副教授學(xué)科專業(yè)：蔬菜學(xué)研究方向：設(shè)施園藝提交論文日期：2006年5月日論文答辯日期：2006年6月6日學(xué)位授予單位：西南大學(xué)中國(guó)重慶2006年5月西南大學(xué)碩士學(xué)位論文ABSTRACr■■—■———一II■■————●●■■●—●●■●STUDYoNTHEENDINGPoINToFSoILⅥ姍RIRRIG矧oNOFPLASTICSHEDToN“Ⅱ’

2、oCandidateLiuHailiSupervisorLuoOingxiABSTRACTThisexperimentwascarriedouttoexploretheoptimalendingpointsofsoilwaterirrigationatthetimeofseedlingandfruitbearingofplasticshedtomatoinSouthChinaOnthedifferentendingpointsofsoi

3、lwaterirrigetion(80％，85％，90％，95％100％)，thefollowingitemswerestudied：themorphologicalandphysinlngicalindexesandthedemandofwaterinseedlingperiod，thephysiologicalindex，totalyieldandqualityoftomato，andthedemandofwaterinfruitb

4、earingperiod，whichwassupposedtopresentefficientreferenceforgreenhousetomatosaveirrigationandtheexpertdecisionmakingsysteminSouthChina，especiallyinCbongqingThemainresultswereasfollowings：I、Ontheendingpointofsoilwateriniga

5、tionof95％inseedlingperiod，thetomatoseedlingshowedthestrongestrootactivitythehighestcontentoffreewaterandratiooffreewatertobindingwaterandthebestseedlingindexwiththelargestdiameterthetallestheightandtheheaviestdrymatter2、

6、intheseedlingperiod，withtheincreaseofandingpointofsoilwaterirrigationwithintherangeof80％～95％photosynthesisrateandtranspirationratebothincreased，andsowithendingpointofsoilwaterinigationwithintherangeof80％●90％inthefruitbea

7、ringperiod；withintherangeof95％～100％，transpirationrateincreasedwhereasphotosynthesisratedecreased，andsowiththeincreaseofendingpointofsoilwaterirrigationwithintherangeof90％～100％inthe細(xì)“如adI培period3hatheseedlingandfruitbeari

8、ngperiod，watereffectiveutilizationratewasbestontheendingpointofsoilwaterinigstionof90％4、Theheaviestaveragemassofsinglefruittheoptimaltomatoyieldandeconomicyieldpercubicwaterandthebestincreaseproductionratewereobtainedont