玉米籽粒含水量對儲藏品質的影響.pdf

1、東北農業(yè)大學碩士學位論文玉米籽粒含水量對儲藏品質的影響姓名：戴曉武申請學位級別：碩士專業(yè)：農藥學指導教師：陶波2002.5.1EffectofMoistureContentofSeedsonCornStorageQualityAbstractInthispapertheeffectsofdifferentcornmoistureandmoldcontentsoncornqualityhavebeensystematicallystudi

2、edTrialshavebeencarriedoutoveratWOyearperiod，andstatisticaldatahasbeengatheredoncornmoisturecontentfromtheproductionandstatepurchasefiguresfortheperiod1990to2001ThefoBowingresultswereobtained：11thasbeendeterminedthatthem

3、oisturecontentofcornproducedintheHeilongjiangProvincehasvariedirregularlyoverthepasttenyearsTheaveragevalueofthemoisturecontentofcornpurchasedbythestateis264％Thishasbeenshowntobeduetoplantingvarietieswhichrequirealongtim

4、eteachmaturity2Thesafestoragetimeofcornwitha)2】4％moisturecontentjSjnexcessof120da3，sbetween0。Cand300CForcornwithahjghermoisturecontentthesafestoragetimefallsquicklyasthetemperaturerisesWhenthesamevarietyisplantedindiffer

5、entareas(Shuangcheng，HulanandSuhua)andharvestedjthasadifierentmoisturecontentsothattheinternalqualityofthecornvariessignificantlyAlltheinternalqualityindicesoftheLongdan13varietyarebetterthanthoseoftheothertwovarieties(S

6、idanl9andBenyu9)whicharesourcedfromoutsidetheProvince3Themoisturecontentoftheembryoishigherthanthatoftheseedsandendosperminthewetcorn，themoisturecontentoftheendospermbeing10werthanthatoftheseedsInthedrycorn，themoistureco

7、ntentofembryoislowerthallthatoftheseedsandendospermThefattyacidcontentintheembryoisalwayshigherthanthatoftheendospermunderthesaltleconditionsWithrisingtemperatureandhumiditythefattyacidcontentintheembryoincreasesrapidlyb