摘要
研究了叶面喷施抗蒸剂对盆栽苹果水分状态的影响。结果表明：抗旱剂一号（主要成分为黄腐酸）可明显降低树体蒸腾（最低时为对照的３９．２１％）、提高气孔阻力（最大时为对照的２４３．９６％）和叶片水势（一般比对照提高０．２－０．４ＭＰａ、最大０．７ＭＰａ），并对叶温未产生明显的影响（变化一般小于１℃），有效作用期长达１５ｄ以上。在果树旱期喷施，可明显改善树体水分状态。腐殖酸效果不明显。
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.
出处
《果树科学》
CSCD
北大核心
1996年第1期1-4,共4页
Journal of Fruit Science
关键词
苹果树
抗蒸剂
气孔阻力
水势
叶温
Apple trees
Anti- transpirants
Transpiration
Stomatal resistance
Water potential
