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Ningxia University (2017)

The Experiment Research of Effects of Water and Fertilizer Coupling on Physiological Index and Quality of Potato under Mulched Drip Irrigation in Arid Regions of Ningxia

马国成;

Titre : The Experiment Research of Effects of Water and Fertilizer Coupling on Physiological Index and Quality of Potato under Mulched Drip Irrigation in Arid Regions of Ningxia

Auteur : 马国成;

Grade : Master’s Theses 2017

Université : Ningxia University

Résumé
For solve the problem of water shortage,and cultivation method behind in the arid central area of Ningxia,and develop potato industry in Ningxia,The experiment was carried out with uniform design and designed with four factors including irrigation norm(X1),nitrogenous fertilizer(X2),phosphate fertilizer(X3),and potash fertilizer(X4).The study was conducted to research the ecological effects of water and fertilizer coupling on photosynthetic index and potato quality indicators in the potatoes.The main research results are as follows :(1)The Chlorophyll relative content of potato was gradually depressed tendency in growth period.The effects of the order of each factor on Chlorophyll relative content was:X4>X3>X2>X1,the effects of each factor on Chlorophyll relative content of potato was positive effect ;The effects of the order of the interaction factors on Chlorophyll relative content was:X3X4>X2X4>X1X3>X2X3>X1X4,Interactive effects of X3X4,X1X3,X2X3 and X1X4 on potato Chlorophyll relative content were positive effect,and Interactive effects of X2X4 was negative effect.(2)The each effects of X1、X2、X3、X4 on net photosynthetic rate of potato were significant.The interaction effects of X1X3、X2X3 on net photosynthetic rate of potato were significant.The each effects of X1、X2、X3 on transpiration rate of potato were significant,the interaction effects of X1X3 on transpiration rate of potato were significant.The each effects of X1、X2、X3 on stomatal aperture of potato were significant,the interaction effects of X1X2、X1X3、X2X3、X2X4 on stomatal aperture of potato were significant.The each effects of X1、X3 on water use efficiency of potato were significant,the interaction effects of X1X2、X1X3、X2X3、X2X4 on water use efficiency of potato were significant.(3)The effects of the order of each factor on Starch yield was:X2>X4>X3>X1,the effects of the order of each factor on Starch content was:X2>X3>X4>X1.The effects of the order of the interaction factors on Starch yield was:X3X4>X2X4>X2X3>X1X4>X1X2>X1X3,and on Starch content was:X3X4>X2X4>X2X3>X1X2>X1X3>X1X4.The effects of the order of each factor on dry-matter production was:X4>X3>X2>X1,the effects of the order of the interaction factors on dry-matter production was:X3X4>X2X3>X1X4>X1X2>X1X3.(4)The optimal Starch yield and content would achieve 9006.7kg/hm2 and 21.58%,while the X1,X2,X3and X4 were 786.6m3/hm2,147.08kg/hm2,300kg/hm2,150kg/hm2 respectively

Mots clés : potato; water-saving irrigation; coupling of water and fertilizer; the arid central area of Ningxia

Présentation (CNKI)

Page publiée le 25 janvier 2018