早稻插植后一星期,开始长新根,萌发新叶。但在有些田块(垌),秧苗插到大田后,回青缓慢或回青后迟迟不分蘖,有些叶片逐渐萎缩,不发新根,根部呈黑褐色,甚至烂根。这种现象叫做发僵或坐蔸。一、禾苗发僵原因。(1)中毒发僵。过多施用未经腐熟的有机肥,或耕翻过迟,加上稻田长期渍水,还原性物质积 One week after planting early rice, a long new root, germination of new leaves. However, in some plots (垌), after the seedlings are inserted into the fields, the green leaves are slowly or slowly tilted after returning to the green. Some of the leaves gradually shrink, no new roots are formed, and the roots are dark brown or even rotten roots. This phenomenon is called stiff or sitting 蔸. First, seedlings stiff cause. (1) poisoning stiff. Excessive application of uncompounded organic fertilizer, or tillage overdue, coupled with long-term waterlogging in paddy fields, reduction of the product volume