论文部分内容阅读
在培育壮秧的基础上,掌握秧龄,适时移栽,是夺取早稻高产的重要环节。超龄秧为什么不好不同品种的水稻有着不同的适宜秧龄。所谓适宜秧龄,一般指秧苗在秧田长到一定程度而尚未开始幼穗分化的一段时间。秧苗在秧田里生长时间长,超过了这个时间,移栽到大田后就会出现超龄现象。超龄秧对产量有明显的影响。因为超龄秧一般已经开始或即将开始幼穗分化,这时秧苗还没有移栽,因受到秧田生长条件的限制,个体发育
On the basis of cultivating strong seedlings, mastering the seedling age and timely transplanting is an important part to seize the high yield of early rice. Why over-aged seedlings different varieties of rice have different suitable seedling age. The so-called suitable seedling age, generally refers to seedlings grow to a certain extent in the seedling has not yet begun spike differentiation period of time. Seedlings grow in the seedling for a long time, more than this time, after transplanting to the field will be over-aged phenomenon. Over-age seedlings have a significant impact on the yield. Because over-age seedlings generally have begun or about to begin spike differentiation, when the seedlings have not yet been transplanted, due to the growth of seedling constraints, individual development