玉米密度、行距和穴距對(duì)間作大豆的影響及其數(shù)學(xué)模型.pdf

1、西南科技大學(xué)碩士學(xué)位論文玉米密度、行距和穴距對(duì)間作大豆的影響及其數(shù)學(xué)模型姓名：林紹森申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：植物學(xué)指導(dǎo)教師：唐永金20070406西南科技大學(xué)碩士研究生學(xué)位論文第1I頁AbstractTheintercroppingbetweenthemaizeandthesoybeaucanmakefulluseofcultivatedlandresourcesandraisecropyieldsremarkablyonthecult

2、ivatedlandStudyingtheinfluenceofmaizeupontheintercroppedsoybeanisaveryimportantworkforguidingtherationalintercroppingsoybeanwithmaizeTheinfluencesofmaizedensityrowspaceandholespaceontheacceptedlight，photosynthesis，yieldc

3、haracterandseedqualityoftheintercroppedsoybeanwereresearchedandthemathematicalmodelswereestablishedusingtheorthogonalandrotationalcombinationdesignsBasedontheanalysisofthemathematicalmodels，theresultsareasfollow：(1)Thesi

4、gnificantregressiverelationsbetweenmaizedensityrowspacingandholespacingandtherelativelightintensityaboveplants，sunlitareaaboveplants，photosynIhesisrate，chlorophyllcontent，biomass，podnumberperplant，grainnumberperplant，gra

5、inweightperplant，100一grainsweightorseedoilcontentofintercroppedsoybeanwerefound(2)Generallyspeaking，thesunlitareaaboveplants，orphotosy玎|hesisrateoftheintercroppedsoybeandecreasedwithmaizedensityandincreasedwiththeincreas

6、eofthemaizerOWspacingandholespacingButtherelativelight—intensityaboveplantsoftheintercroppedsoybeanhadnottheobvioustendencyMeanwhile，thechlorophyllcontentoftheintercroppedsoybeanincreasedwiththemaizedensityanddecreasedwi

7、ththeincreaseofthemaizerowspacingandholespacing(3)Onthewhole，thebiomass，podnumberperplant，grainnumberperplant，grMnweightperplantandseedoilcontentoftheintercroppedsoybeanreducedwiththeincreaseofmaizedensity，andincreasedwi

8、ththeaugmentofmaizerowspacingandholespacingBut100grainsweightoftheintercroppedsoybeanhadnottheobvioustendency(4)Thesignificantregressiverelationsbetweenmaizedensityrowspacingandholespacingandthegrainnumberperpodorseedpro

9、teincontentoftheintercroppedsoybeanwerenotfoundInconclusion，theresultsoftheexperimentsrevealsthatthethreefactors，namelymaizedensity，rowspacingandholespacing，havedistinctinfluencesupontheintercroppedsoybean，butthedirectio