干旱对苹果树茎流的影响  

Effect of Drought on Stem Flow of Apple Trees

作　　者：李亚利 LI Yali(Forestry and Fruit Industry Development Office of Xinjiang Uygur Autonomous Region,Urumqi Xinjiang 830054)

机构地区：[1]新疆维吾尔自治区林果业发展办公室,新疆乌鲁木齐830054

出　　处：《现代农业科技》2021年第22期32-34,共3页Modern Agricultural Science and Technology

基　　金：新疆林果业提质增效科技专项基金(XJLGZX19-01)。

摘　　要：为明确红富士苹果树在缺水时的茎流规律,利用热扩散技术,在阿克苏地区对不同水分处理下红富士苹果树茎流的响应进行分析。结果表明,水分过多可能抑制果树蒸腾作用,体现在灌溉当天日茎流量值下降。缺水时,红富士苹果树单日茎流速率为“窄峰”曲线,茎流开始时间较晚,结束时间较早;同时刻茎流速率差别较小,说明果树缺水时蒸腾耗水受天气影响小。相关性分析表明,50 cm土层土壤体积含水率与茎流量相关性最大,对红富士苹果树适时灌水有一定的指示作用。In order to clarify the stem flow law of red Fuji apple trees under the condition of water shortage,the response of stem flow of red Fuji apple trees under different water treatments was analyzed in Aksu area by using heat diffusion technology.The results showed that excessive water could inhibit transpiration of fruit trees,which is reflected in the decline of daily stem flow value on the day of irrigation.Under the condition of water shortage,the stem flow rate of red Fuji apple tree in a single day showed a"narrow peak"curve,and the stem flow started later and ended earlier;the difference of stem flow rate at the same time was small,indicating that the transpiration water consumption of fruit trees was less affected by the weather when the fruit trees were short of water.The correlation analysis showed that the correlation between the soil volume moisture content in the 50 cm soil layer and stem flow was the greatest,which could indicate the timely irrigation of red Fuji apple trees.

关 键 词：红富士苹果树 干旱胁迫 茎流 

分 类 号：S661.1[农业科学—果树学]