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油菜幼苗的生长进程,直接影响苗期生长,对培育壮苗、夺取高产颇有实际意义。因此,了解幼苗生育特点,并根据其特点采取相应的管理措施,可减少栽培管理上的盲目性,达到事半功倍,增产显著的目的。一、幼苗生育特点我们于1978年油菜出苗后,对一至十叶期的幼苗分两个播期逐一测定了各叶龄单株生长量及各部位韵变化情况。测定结果表明,油菜幼苗生长进程与叶龄关系密切。油莱苗一至三叶期生长缓慢,四至五
Rapeseed seedling growth process, a direct impact on seedling growth, to cultivate strong seedlings, to obtain high yield quite practical significance. Therefore, to understand the characteristics of seedling growth and take corresponding management measures according to its characteristics can reduce the blindness in the cultivation and management so as to achieve the goal of doing more with less and increasing yield significantly. First, the characteristics of seedling growth After we rapeseed emergence in 1978, one to ten leaf stage of seedlings in two sowing dates were measured for each leaf age single plant growth and the rhythm of various parts of the change. The results showed that the rapeseed seedling growth process and leaf age are closely related. Oil seedling one to three-leaf stage of slow growth, four to five