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《Xinjiang Agricultural Sciences》 2018-01
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Effects of Different Cold-proof Measures on Winter Protection of Sweet Cherry

WANG Xiu-mei;ZHANG Yun;ZHU Tian-tian;LIU Kang;Xinjiang Agricultural University;Xinjiang Academy of Forestry;  
【Objective】This project aims to analyze the effects of different cold-proof measures on physiological indexes of sweet cherry and its overwintering protection effect. 【Method】Four cold resistance indexes,such as relative conductivity and malondialdehyde,were determined by using young sweet cherry trees of two years old as experimental materials,and the logistic equation was used to calculate LT50 and the recovery rate was used to evaluate the sweet cherry overwintering effect and the pros and cons of the protective effects.【Result】Relative conductivity and malondialdehyde contents were negatively correlated with overwintering,soluble sugar and proline content were positively correlated with overwintering,the cumulative contribution rate of the cold physiological index combined with the recovery rate was 78. 959%. Under the cold-proof measures,earthed up + straw screen treatment and earthed up treatment,sweet cherry's critical low tolerance temperature was-23. 20℃ and-22. 34 ℃,respectively,6 ℃ lower than that of the CK. The recovery rate of the two treatments was about 80%,which was higher than that of other treatments. The recovery rate of the two treatments was about 80% respectively higher than that of other treatments,while the recovery rate of CK treatment was only 43. 89% after overwintering. 【Conclusion】Five indexes,such as restoring growth rate,can be used as the basis for evaluating the effect of sweet cherry overwintering under different cold control measures. The protective effects can be divided into three categories,among which,earthed up + straw screen treatment or earthed up treatment was better,straw screen and earthed up + felt pad treatment was just so-so,the worst was felt pad treatment and others.
【Fund】: 国家林业公益性行业科研专项资助项目(201304714)~~
【CateGory Index】: S662.5
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