摘要
通过对水秧人栽、旱秧人栽、旱秧抛栽和塑盘抛栽与三化螟发生为害关系的探讨，初步明确了在同期播栽的情况下，４种栽培方式对水稻全生育期的影响并不明显，分期播种、同期移栽，早播与迟播从始穗至齐穗的历期相差７～１０ｄ。三化螟侵入旱秧的侵入率、成活率低于水秧及塑盘秧，取食水秧、塑盘秧的生长发育速度快于旱秧。一块卵造成的枯心数，旱秧抛栽多于塑盘抛栽，造成的白穗数，４种栽培方式间无显著差异。
In this paper, the relationship between wet seedlings transplanted by man, dry seedlings transplanted by man, dry seedlings transplanted by throwing and plastic disc seedlings by throwing to outbreak and damage of tryporyza incertulas (Walker) has been discussed. It is originally decided that there is no clear effect on the full growing period of rice among the four cultural methods if sowed and transplanted synchronously. There is 7￣10 days difference from early ear stage to full ear stage between being sowed early and late if sowed respectively but transplanted synchronously. The rate of tryporyza incertulas ( Walker) boring and survival in dry seedlings is lower than that in wet seedlings and plastic seedlings, and its development in wet seedlings and plastic disc seedlings is faster than that in dry seedlings. The amount of dead heart made by one egg mass in dry seedlings transplanted by throwing is more than that in plastic disc seedlings transplanted by throwing, but the amount of white ear is no difference among the four cultural methods.
出处
《江苏农学院学报》
CSCD
1998年第4期43-46,共4页
Jiangsu Agricultural Research
基金
江苏省农科院资助
扬州市人才基金
关键词
三化螟
轻型栽培
为害
水稻
Tryporyza incertulas (Walker)
light culture
outbreak and damage
