摘要
采用定点定位的方法 ,对干旱、冻害、冰雹等灾害性气候对茶树影响进行了研究。结果表明 :灾害性干旱气候影响茶树的正常生理代谢 ,茶树的百芽重、叶绿素含量等生理指标较正常年份下降 70 .4 %～12 6 .9% ,而冰雹、干旱、冻害对茶树生物学性状的影响中 ,纯茶园与人工生态茶园比较新梢损伤率为 2 2 .5 %～ 82 .5 % ,嫩梢含水量亏缺为 4 .7%～ 6 .0 % ,枯死半枯死叶片数增加 2 .7～ 2 .9倍。嫩梢含水量减少 ,从而影响茶树生化成分 ,造成茶叶减产以及茶叶品质下降。
Effect of drought, freeze and hail on tea trees is studied by using follow up investigation method. The drought influences the normal physiology of tea trees, which brings 70.4%～126.9% decrease for the one hundred buds weight, the chlorophyll content and other parameters. The hail, drought and freeze influence the biology characteristics also. The harm ratio of new shoot increases by 22.5%～82.5%, the water content of new shoot decreases by 4.7%～6.0%, and died and half died leaves increase 2.7～2.9 times. Decrease of the water content of new shoot influences the chemical components and brings the yield and quality decrease.
出处
《贵州农业科学》
CAS
2003年第2期20-23,共4页
Guizhou Agricultural Sciences
基金
贵州省自然科学基金项目 [黔基合字 2 0 0 2 (30 4 2 ) ]
贵州省"九五"科技攻关 [黔科农合字 2 0 0 0 (2 2 11) ]
