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我县一九七九年秋在来风公社三合五队用“西南三○二”进行油菜大、壮苗与小、弱苗对比试验,每小区五厘,折亩栽七千八百株,结果看出:前者亩产二百六十六斤,后者亩产一百一十六斤,增产百分之一百二十九。对比秧苗都是九月二十三日播种,十一月十二日移栽,秧龄四十九天。小、弱苗大都是在播量大、管理抓得差的苗床中选的。从考查十株秧苗看,总叶数、最大叶片长和宽、每株鲜重、干重、灰分重等,前者都高得多,说明大、壮苗制造和贮藏的养分多。同时越
In the autumn of 1979, in our county commune Commune Commune three teams of five hundred “southwest of three hundred and two” rape large, strong seedlings and small, weak seedling contrast test, each plot of five percent, folding acre planted seven thousand eight hundred, As a result, the former produced 266 kg of mu per mu, while the latter produced 116 kg of mu, an increase of 119%. Contrasting seedlings were sown on September 23 and transplanted on November 12 with a seedling age of 49 days. Small, weak seedlings are mostly broadcast in the large, poor management of the seedbed selected. From examining the ten seedlings, the total number of leaves, the largest leaf length and width, fresh weight per plant, dry weight, ash and so heavy, the former is much higher, indicating that large, strong seedling storage and storage of nutrients. At the same time more