The Research Of The Effect Of Magnesium Sulfate Foliar Spraying On Potato Growth And Development And Starch Accumulation

This research takes "overcoming 13 new" potatoes as experiment material , the leaf gushes different thickness of Shi face to face in it's present flower bud scheduled time and stem tuber increase scheduled time (0.5% , 1.0% , 1.5% , 2.0% , 2.5%) magnesium sulphate , the effect effect, studying the person establishes to potato form , small side door properties , amylum compose only accumulation , output between inner link. Study a conclusion as follows:1 The leaf gushes proper thickness of Shi face to face (0. 5% ~ 2.0%) magnesium sulphate can have an effect to boost the high , main potato plant stem stem increasing by roughly , can boost it's root system growing, the stem tuber increase reaches a blade , the stem stem , the stem tuber do matter accumulation, return a vigour back to LAI and root system having improved a potato besides , reach 2 with the fact that potato growth , magnesium sulphate thickness are increasingly big , it's above-mentioned effect getting over regards , magnesium sulphate thickness. Have shown the restraint effect when 5%.2 The leaf gushes proper thickness of Shi face to face (0. 5% ~ 2.0%) magnesium sulphate , Cha , Chb , Chl contents , the brightness having strengthened a potato having improved a potato close a rate , the rising rate , moisture content make use of efficiency , the air hole to lead degree.3 The leaf gushes proper thickness of Shi face to face (0. 5% ~ 2.0%) magnesium sulphate, has strengthened potato blade SPS activity, notable have improved stem tuber formation scheduled time stem tuber increase scheduled time blade cane sugar contents , have reduced build-up scheduled time of amylum blade cane sugar contents , have improved every period sugared blade deoxidation contents, have reduced every period blade amylum contents, have strengthened every period the stem tuber has changed an enzymatic activity , has improved stem tuber formation scheduled time stem tuber cane sugar contents , has reduced build-up scheduled time of stem tuber increase scheduled time amylum stem tuber cane sugar contents , has improved sugared contents of stem tuber formation scheduled time stem tuber increase scheduled time stem tuber deoxidation, Have reduced sugared contents of build-up scheduled time of amylum stem tuber deoxidation4 The leaf gushes proper thickness of Shi face to face (0.5% ~ 2.0%) magnesium sulphate , single yam weight and output having improved a potato.