论文部分内容阅读
本试验显示 :基质中定量加入专用肥可加快幼苗的生长 ,专用肥不同含量对甜瓜幼苗生长量和幼苗质量等有较大影响 ,过多的专用肥会抑制甜瓜的幼苗生长。在基质的基本配方为珍珠岩 :泥炭 =1∶1时 ,甜瓜工厂化育苗专用肥的添加量为 2 .5%。专用肥含量不同 ,甜瓜苗在丰产性相对指数和叶绿素含量、根系活力等生理指标上差异很大 ,B2 基质的甜瓜幼苗表现出较大的优越性。叶绿素含量与茎叶鲜重、根系活力与根鲜重等生理指标并无明显相关性。当基质中定量添加专用肥后 ,在营养液浇灌与清水浇灌处理间 ,甜瓜幼苗生长势和生长量无明显差异 ,当育苗基质中含有一定量的养分时 ,甜瓜幼苗可用清水浇灌代替营养液浇灌
The results showed that adding proper amount of special fertilizer into the matrix could accelerate the growth of seedlings. The different content of special fertilizer had a great effect on the growth of cucumber seedlings and seedling quality. Too much special fertilizer could inhibit the growth of melon seedling. In the matrix of the basic formula perlite: peat = 1: 1, the melon factory nursery special fertilizer added 2.5%. The content of special fertilizers is different, the relative indexes of chlorophyll content and chlorophyll content, root vigor and other physiological indexes of melon seedlings are quite different, and the B2 matrix melon seedlings showed great superiority. Chlorophyll content and fresh weight of stems and leaves, root activity and root fresh weight and other physiological indicators have no significant correlation. When the special fertilizer was added quantitatively, the growth potential and growth of muskmelon seedlings did not differ significantly between nutrient solution irrigation and watering treatment. When a certain amount of nutrients were contained in the matrix, melon seedlings could be irrigated with fresh water instead of nutrient solution