日本东北地区稻作技术交流团,应中国农学会邀请,于1979年在吉林农科院水稻研究所(公主岭),进行了水稻机械化稳产高产栽培技术示范.示范田面积150亩,大部分为常年稻田,少部分为旱改水田.土壤属草甸型轻粘壤质河淤土,pH为7.O～7.5,地 At the invitation of the Chinese Agricultural Association, the Rice Cultivation Technical Exchange Delegation of Northeast Japan conducted a demonstration of high-yielding cultivation techniques for mechanized rice production in Jilin Academy of Agricultural Sciences Rice Research Institute (Gongzhuling) in 1979. The demonstration plot covers an area of ​​150 mu, most of which are perennial Paddy fields, a small part of dry land for paddy fields. The soil is a meadow-type light loam loam river sediment, pH 7.O ~ 7.5, to