作　　者： ; ;

机构地区： 兰州大学生命科学学院干旱农业生态国家重点实验室

出　　处： 《西北植物学报》 2003年第1期39-43,共5页

摘　　要： 实验以日光温室中正常生长的黄瓜为对照,研究了补施CO2对温室黄瓜光合作用,株高、茎粗、节数、植株干重及鲜重,叶绿素含量、叶面积及厚度,瓜长、瓜重及周径,总产量和抗病性的影响。结果表明:与生长正常条件下黄瓜的日光合曲线相比,补施CO2的温室内黄瓜的日光合曲线有所改变,日平均光合速率提高了1.275μmol·m-2·s-1;与对照相比,株高、茎粗、节数、植株干重、鲜重分别增加了10.7%、37.6%、27.1%、27.3%、31.4%,对植株节数和干鲜重的影响达到极显著水平;叶绿素含量、叶面积及厚度分别增加了0.48%、7.07%、24.82%,对叶面积的影响达到显著水平;黄瓜的果长、果重和平均周径分别增加了9.4%、13.1%、11.8%,对果重的影响达到显著水平;温室总体产量增加了23.96%;补施CO2也提高了黄瓜抗病性,使每百株的发病株次降低了9株次。补施CO2可以缩小黄瓜植株间差异。 The effects of applied CO2 in the solar greenhouse on photosynthesis characters of Cucumis sativus,the stem height and perimeter,number of nodes,fresh weight and dry weight of plant,the area,thick,chlorophyll content of leaf,the length,weight and perimeter of cucumber,and the resistance to diseases were studied,according to the Cucumis sativus grown in the normal solar greenhouse.The results showed that relative to CK,applying CO2 in the solar greenhouse can elevate average of photosynthetic rate 1.275 μmol·m-2·s-1,in the experiment greenhouse,the stem height and perimeter,number of nodes,fresh weight and dry weight of plant increased respectively by 10.7%,37.6%,27.1%,27.3%,31.4%,the effects on number of nodes,fresh weight and dry weight of plant were very significantly,the area,thick,chlorophyll content of leaf increased respectively by 0.48%,7.07%,24.82%,the effect on the thick of leaf was significantly,the length,weight and perimeter of cucumber increased respectively by 9.4%,13.1%,11.8%,the effects on the weight of cucumber was significantly.The total output of EXP increased by 23.96%.The number of attacked by disease decreased in the solar greenhouse with applied CO2.The variance of statistics shows that the difference among the plants decreases.

关 键 词： 补施 日光温室 黄瓜 生长 光合作用

领　　域： [农业科学] [农业科学] [农业科学] [农业科学]