【摘要】 研究了水溶性壳聚糖对黄瓜幼苗生长和生理特性的影响。结果表明,喷施不同浓度的水溶性壳聚糖后,幼苗株高、茎粗、叶面积均比对照增加约30%,干物重增加约20%;叶绿素含量、根系活力以及光合速率均明显高于对照。壮苗指数以喷施1.5‰的处理为最好,1.0‰处理次之。说明在苗期喷施水溶性壳聚糖能够促进黄瓜幼苗的生长,有利于培育壮苗。更多还原

【Abstract】 The paper evaluated the effects of dissoluble chitin on the growth and the physiological characteristics of the cucumber seedling. The results showed that after spraying the different concentration dissoluble chitin, the plant height, the stem thickness and the leaf area of cucumber seedling increased about 30 percent to the control. The dry weight increased about 20% to the control. The content of chlorophyll, the root activity and the photosynthetic rate were much better than the control, and had great difference. The healthy index of the seedlings showed that the treatment 1.5‰ was the best, and the treatment (1.0‰)was the second. The results showed that spraying dissoluble chitin during the seedling stage could accelerate the growth of cucumber seedling, and benefit the breeding of healthy seedling.更多还原