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单季晚稻是本县的主要农作物。推广抛秧技术是减轻劳动强度、提高劳动生产率的有效途径。作者在近三年抛秧试验、示范、推广中,就生育特点和栽培技术作了初步研究,本文着重阐述适度群体、主攻穗重的技术路线。 1.单季抛秧稻的生育特点 以全县150块定点考察田的三年资料为主要依据,以底膜育秧和水育大苗插秧稻为对照进行研究。 1.1 塑盘育秧苗体小,干物质积累多 采用有孔穴的塑制秧盘育秧,其播种密度为1.4～1.5万粒/m~2,比底膜育秧2.7～2.8万粒/m~2降低40％左右,
Single season late rice is the county’s main crop. To promote throwing seedling technology is to reduce labor intensity and improve labor productivity an effective way. In the last three years, the author throwing rice experiment, demonstration, promotion, made a preliminary study on the characteristics of fertility and cultivation techniques, this article focuses on the appropriate groups, the main focus of the technical route. 1. The characteristics of single-season throwing rice growth characteristics of the county 150 fixed-point study of the three-year field data as the main basis of the basement membrane and seedling transplanting seedlings as a control study. 1.1 Plastic tray seedling seedling body is small, more dry matter accumulation using hole plastic seedling tray cultivation, the sowing density of 1.4 to 15000 / m ~ 2, than the basement membrane seedling 2.7 ~ 28000 / m ~ 2 decreased About 40%