摘要
以陕西省乾县枣子沟旱坡地果园的新红星、长富2号、乔纳金苹果品种为材料,砧木为新疆野苹果,在田间条件下,应用“三次称重法”研究了不同苹果品种在生长季及id中蒸腾强度变化规律。结果表明,3个品种均在8月份出现叶片蒸腾强度的峰值,生长季节长富2号与乔纳金比较接近,而新红星显著高于前两个品种。蒸腾强度日变化中,日出前后6～8时增长速率最快。在环境条件良好时,10～14时达到最高水平,以后随气温下降逐渐减弱,日落后达到较低水平。土壤水分亏缺时,叶片蒸腾强度出现双峰现象,12～14时出现低谷,新红星尤明显。
'Three—Time—Weigh' method was utilized to measure the varying laws ofleaf transpiration intensity of three apple cultivars such as starkrison, Fuji jona golden inorchards on the slope land in Zaozigou watershed Qianxian, County,Shannxi Province un-der the field conditions. The results sho wed that during the growing season transpirationintensity of leaf of three varieries reached maximum on July and Augusts. starkrinson washigherthen other two which are. The increasing rate of transpiration from 6 to 8 A. m wasthe fastest, and in case of good soil water condition, leaf transpiration intensity reached thehighest from 1o to 14. Under the water stress conditions, leaf franspiration intensifyreached maximum from 10 fo 12 with moisture stress, leaf transpiration may have thedoble peaks, but a low valley of curve occured at 12～14 p. m. with starkrimson in particu-lar.
出处
《干旱地区农业研究》
CSCD
北大核心
1993年第S2期78-81,共4页
Agricultural Research in the Arid Areas
关键词
苹果品种
叶片
蒸腾强度
田间条件
三次称重法
apple varieties
transpiration intensity
field conditions
three--time weigh method
