黄瓜嫁接苗生长状况、光合特性及养分吸收特性的研究  

Study on growth situation, photosynthetic characteristics and nutrient absorption characteristics of grafted cucumber seedlings

作　　者：孙艳[1] 黄炜[1] 田霄鸿[2] 吴瑛[2] 丁勤[1] 周存田[1] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨凌712100 [2]西北农林科技大学资源环境学院,陕西杨凌712100

出　　处：《植物营养与肥料学报》2002年第2期181-185,209,共6页Journal of Plant Nutrition and Fertilizers

摘　　要：以黑籽南瓜和西葫芦为砧木 ,分别与津优 1号及农城 4号黄瓜嫁接 ,对形成的 4种嫁接苗和相应的自根苗的生长状况、光合特性及养分吸收特性进行了研究。结果表明 ,黄瓜嫁接苗的根系发育好 ,重量大 ,最大侧根长度长 ;根 /冠比大 ,壮苗指数高 ,秧苗生长健壮 ;叶片中叶绿素含量高 ,光合速率大 ;吸收氮磷钾的能力强。In this experiment, the four typs of grafted cucumber seedlings were obtained through with black seed pumpkin (Cuarbita ficifolia) and squash (Cucurbita pepo L ) as two rootstocks and with Jin You No 1 and Nong Cheng No 4 as two Scions The growth situation, photosynthetic characteristic and nutrient absorption characteristic of grafted cucumber seedlings and two auto root seedlings were studied The results showed that, comparing the grafted cucumber seedlings with auto root seedlings, the former demonstrated apparent advantages, which were as follows: the root fresh weight of grafted cucumber seedlings was heavier than that of auto root seedlings, the length of the longest side root longer, the development status of roots was better; the ratio of root to shoot was larger, the index of high quality seedlings was higher, the grafted seedlings was very robust; the chlorophyll content of leaves was higher, and the photosynthetic rate (Pn) was greater and the absorbing ability to nitrogen, phosphorus and potassium was more powerful

关 键 词：黄瓜 嫁接苗 光合特性 养分吸收 

分 类 号：S642.2[农业科学—蔬菜学]