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Effects of Anti-transpirants to Water Status of Apple Trees

Xia Yang(Horticultural Department of Shandong Agricultural University,Taian 271018)  
Three-year-old potted apple trees cv. Liao-fu were used in the experiment. Results showed that fulvicacid decreased the transpiration(the minimum decrease was 39.21%lower than the control),significantly in-creased the stomatal resistance(the maximum increase was 243.96%when compared with the control)andraised leaf water potential(0.2- 0.4 MPa in general,reached the maximum of 0.7 MPa).While there hadno significant influence on leaf temperature(the differences were less than 1℃).The effect could last formore than 15 days. Spray application during drought period could improve significantly the water status offruit trees. No appreciable effect of humus acid was noted.
【CateGory Index】: S661.101
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