摘要
小麦起身期叶面喷施150～200ppm多效唑溶液,植株表现出明显的抗倒特性。处理后节间缩短,基部茎增粗,茎壁加厚,茎秆高度降低,重心位置下移,相对下垂力距减小,厚壁组织细胞层和茎秆横切面维管束数目增多,基部茎秆单位长度内干物质重量和纤维素含量提高,小麦植株抗倒伏能力加强;同时叶片叶绿素含量提高,光合强度增加,生理活性增强。
With foliar application of 150-200 ppm PP_(333) in the joirting stage, wheat shows obvious charater of lodging resistant. Tis treatement can shorten internodes,thicken basic caules and the stem wall, reduce the height of stem,lower the central of gravity,lessen the relative moment of gravity, increase sclerenchymatous cell layer and fibrovascular bundles of the stem latitudinal section,raise the weight of dry matter and the content of lignose in per unit length of the basic stem, and enhance the ability of lodging resistant. At the same time, chlorophyll content is raised, photosynthesis improved and physiological activity strengthened.
出处
《河南农业大学学报》
CAS
CSCD
1993年第1期16-20,共5页
Journal of Henan Agricultural University
关键词
小麦
多效唑
生理学
特性
形态学
wheat
PP_(333), lodging
shape
physiological character
