论文部分内容阅读
1.茶树在水培法下,2小时内即能吸收磷素。 2.茶苗在子叶期间.无论它有无子叶,均需向外吸收磷素,但无子叶的吸收得更多,因此,播种前必须施用基肥,否则会影响子叶期间的幼苗生长。 3.茶苗的子叶,不仅有贮藏原有物质的作用,而且还能将根系吸收的营养物质起到运输作用。 4.茶苗在相对休眠状态所吸收的磷,在体内的分布是:无论有无子叶的,均是:根>茎>叶。在生长状态所吸收的磷在体内的分布是:①有子叶的:根>叶>茎,无子叶的:叶>根>茎。 5.无论是在嫩叶上或在老叶上,进行根外追磷,茶树均能吸收。但是追施在嫩叶部分的吸收效果更好。 6.幼龄茶树从4—12月均不断地吸收磷肥,其中出现两个吸收高峰:一个是6—7月间,另一个是12月份。这说明磷肥不仅要分次施用,而且应该以两个高峰期前一个月作为主要施磷期。
1. Tea tree in hydroponics, that is, within 2 hours to absorb phosphorus. 2. Tea seedlings in the cotyledon, regardless of whether it has cotyledons, need to absorb phosphorus outward, but no cotyledons absorb more, therefore, must be applied before sowing basal fertilizer, otherwise it will affect seedling growth during cotyledon. 3. Cotyledons cotyledons, not only the role of storage of the original material, but also the roots can absorb the nutrients play a role in transport. 4. Tea seedlings in the relative dormancy absorbed phosphorus, the distribution in the body: whether or not cotyledons are: root> stem> leaf. Phosphorus absorption in the growth state in vivo distribution is: ① cotyledons: root> leaf> stem, no cotyledons: leaf> root> stem. 5. Whether it is on the young leaves or on the old leaves, the roots of phosphorus, tea can absorb. However, topdressing in the young part of the absorption effect is better. 6. Young tea trees from April to December are constantly absorbing phosphate, which showed two absorption peaks: one is from June to July, the other is in December. This shows that not only the application of phosphate fertilizer graded, and should be one month before the two peak as the main phosphorus.