晋西北旱坡地枣树蒸腾作用与萎蔫现象研究  

Jujube Transpiration and wilting in Northwest Shanxi Arid Hillside Field

作　　者：卢桂宾[1] 赵雨明[1] 

机构地区：[1]山西省林业科学研究院,山西太原030012

出　　处：《山西林业科技》2002年第3期1-6,共6页Shanxi Forestry Science and Technology

摘　　要：以木枣为试材进行枣树蒸腾作用与萎蔫现象研究 ,结果表明 :晋西北黄土丘陵旱坡地枣树叶片在正常年份内的蒸腾速率为 0 .93 μg/ (s· cm2 ) ;枣树的蒸腾系数为3 81 .66,即枣树叶片每制造 1 g干物质需要消耗水分 3 81 .66g。枣树的萎蔫现象是指果实的萎蔫和叶片的萎蔫 ,枣树幼树叶片的永久萎蔫系数为 3 .5%,而枣树大树叶片的永久萎蔫系数应低于 3 .3 6%。果实萎蔫分为暂时萎蔫和永久萎蔫。果实萎蔫时期一般是在气温最高的 7月— 8月份 ,特殊年份可持续至 9月上旬 ,枣果实开始萎蔫时的土壤水分含量在 6%左右。Cultivar'Muzao'was used as test material,the study results showed that in arid hillside field,loess hills of northwest ShanXi Province,the transpiration rate of jujube leaf blade in normal year is 0.93 μg/s· cm 2 ;the transpiration coefficient of jujube is 381.66,i.e.that jujube leaf blade in producing 1 g ramme dry matter requires 381.66 gramme water.The wilting phenomenon of jujube just pointed to the fruit wilting and the leaf blade wilting.The permanent wilting coefficient of young jujube tree was 3.5 %,but that of elder trees was less than 3.36 %.The fruit wilting can be divided into the temporal wilting and the permanent wilting.The fruit wilting period in a year was commonly in the highest air temperature months of July and August,but in the special year,the fruit wilting can last to the frist ten-day period of September.The soil water content when fruit began wilting was about 6%.

关 键 词：晋西北 蒸腾作用 萎蔫现象 旱坡地 枣树 蒸腾速率 蒸腾系数 萎蔫系数 

分 类 号：S665.1[农业科学—果树学]