论文部分内容阅读
为了掌握玉米根系发生发展规律,给栽培管理措施的制订提供理论依据,1979—1981年,我们在学校农场的冲积沙壤土地,对以郑单2号为主的五个玉米单交种,在夏播亩产1029.8—1093.6斤的田间条件下的根系发育情况,进行了连续观察研究,结果如下:一、初生根的发生与发展初生胚根皆为1条,种子吸水萌动时首先长出,垂直入土,横向摆动半径5—9厘
In order to grasp the occurrence and development of corn root system and provide a theoretical basis for the formulation of cultivation management measures, from 1979 to 1981, on the alluvial sandy land of school farms, Planting 1029.8-1093.6 kg per mu yield under the field conditions of root development, conducted a continuous observation and study, the results are as follows: First, the emergence and development of primary root embryo root are all one, the first seed germination when the water germination, vertical Soil, horizontal swing 5-9%