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首页> 外文期刊>日本作物學會紀事 >Analysis of Mechanism of Low-Yielding of Rice Caused by Late-Transplanting. : (V) On the Yielding Responses of Seedlings Grown for Various Period in the Nursery.
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Analysis of Mechanism of Low-Yielding of Rice Caused by Late-Transplanting. : (V) On the Yielding Responses of Seedlings Grown for Various Period in the Nursery.

机译：晚移植造成的低产水稻机制分析。 ：（v）在苗圃中种植的幼苗的产量反应。

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1. From our previous studies, it is evident that if the seeds sown sparsely in seed-bed they can produce higher yield, even when transplanted later than usual. But this method needs wide acreage and much labour to manage the seed-bed and there are some troubles in applying this. Then we tried to sow seeds lately in seed-bed and transplant seedlings lately to paddy fields because this method needs less acreage and labour. 2. Two varieties were used: "Sekiyama-No.2" is a heavy-panicle type and Ou-No.195" a mediate type. Seeds were sown at six different times to seedbed with ten days interval from 16th of April to 5th of June, and the seedlings were transplanted 20 or 30 days later than usual. 3. Seedlings Were transplanted individually with the rate of six hills per 3.3m (90.9 × 60.cm) in a paddy field in order to give a good enough space for growing. 4. Both varieties showed low yields when it was transplanted lately owing to decreasc of pancle numbers. 5. Wnen the both varieties were transplanted 30 days later than usual, and also "Sekiyama-No. 2" transplanted 20 days later than usual, the length of nursery period gave no influeuee on the yield. In other words there is no difference of yields between the rice crop derived from the seedlings grown for only 30 days and that derived from seedlings grown for as long as 70 days in seed-bed, when they were transplanted 30 days later than usual season.
机译：1.从我们以前的研究中，显然，如果种子在种子床上稀疏，它们也可以产生更高的产率，即使在比平时晚移植。但这种方法需要广泛的种植面积和劳动力来管理种子床，在应用这方面存在一些麻烦。然后我们试图在种子床上播种种子，并最近移植幼苗，因为这种方法需要更少的面积和劳动力。 2.使用了两种品种：“Sekiyama-no.2”是一种重穗型和ou-no.195“A调解类型。从4月16日到第5次以十年间隔播种，种子六个不同的时间播种。 6月，幼苗在往常移植20或30天。3.幼苗在稻田中以六个山丘（90.9×60.cm）的六个山丘分别移植，以便给出足够的空间为了生长。4.由于孔隙数减少，两种品种最近移植的情况下出现低产。5.在两种品种的情况下，两天后往往是平常的，也“Sekiyama-No。 2“常见的20天移植，幼儿园的长度没有施产率。换句话说，衍生自幼苗只生长的幼苗的产量没有差异，源于种植的幼苗只要种子床上70天，当它们比往常季节晚30天移植时。

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