种植密度对茴香光合生理及产量的影响  

Effect of Density on Photosynthesis and Yield of Fennel

作　　者：吴福强[1,2] 王明友[1,2] 

机构地区：[1]德州学院农学系,山东德州253023 [2]德州市设施蔬菜工程技术研究中心,山东德州253023

出　　处：《黑龙江农业科学》2013年第6期45-47,共3页Heilongjiang Agricultural Sciences

基　　金：山东省农业良种工程资助项目[鲁科农字(2009)103号]

摘　　要：为探讨茴香的合理密植,高效栽培,以自选茴香品种为试验材料,研究了不同种植密度对茴香叶片叶绿素含量、光合速率及蒸腾速率生育时期变化和日变化,以及地上部产量的影响。结果表明:茴香叶片叶绿素含量在密度低于6.75×106株.hm-2时保持较高水平,此后随密度增加含量明显降低,在达到最高密度8.25×106株.hm-2时含量最低;光合速率和蒸腾速率在茴香种植密度增加之初略有提高,密度为6.00×106株.hm-2时最大,此后随种植密度增加,不断降低;茴香单株产量在低种植密度范围内较大,随密度增加单株产量降低;茴香产量随种植密度增加呈"增加—降低"变化,在6.75×106和7.50×106株.hm-2保持较高产量。因此,冬春茴香保护地栽培适宜种植密度为6.75×106株.hm-2。In order to provide data basis for rational density, the self-chosen variety was taken as material to study the effect of density on chlorophyll content,different growth stage and diurnal changes of photosynthetic rate and transpiration,yield of fennel. The results showed that leaf chlorophyll content of fennel kept a higher level at lower density of 6.75 X 106 plants per hectare. Then it significantly fell down at higher density and was lowest at density of 8. 25 X 10s plants per hectare. Photosynthetic rate and transpiration rate were improved slightly at lower density and reached the highest value at density of 6.00 X 106 plants per hectare. After that, those reduced with increasing planting intensity. The single plant yield was high at low density, then decreased with increasing of density. The yield went up at first then dropped down with increasing density. When the density of fennel cultivation was 6.75× 10^6 and 7.50×10^6 plants per hectare,the fennel yield was higher. In con- clusion,the proper density of fennel cultivation was 6.75 × 10^6 plants per hectare in greenhouse of spring and winter.

关 键 词：种植密度 茴香 光合生理 产量 

分 类 号：S573.9[农业科学—作物学]