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首页> 外文期刊>日本作物學會紀事 >Analysis of Yield-Determining Process and Its Application to Yield Prediction and Culture Improvement of Lowland Rice : LXXXIII. Relation between the plant types after heading and the varieties differing in the maturation period.
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Analysis of Yield-Determining Process and Its Application to Yield Prediction and Culture Improvement of Lowland Rice : LXXXIII. Relation between the plant types after heading and the varieties differing in the maturation period.

机译：产量测定过程分析及其在低地稻中产量预测和培养改善的应用：LXXXIII。标题后植物类型与成熟时期不同的品种之间的关系。

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In the previous paper (No. 73) the authors pointed out that the plant type after heading has a close relation to the percentage of ripened grains under luxurious growth conditions and, therefore, the study of plant types is quite necessary for maximizing the yield of rice. In the other papers (No. 58 and 66) they also clarified that the top-dressing of nitrogen at a definite growth stage makes the plant elongate a definite leaf-blade, leaf-sheath and internode, while the restriction of nitrogen supply shortens each of them. On the basis of these facts, the authors considered that under the rice cultivation in which only basical fertilizers are applied and not top-dressed at all, if the varieties differing in the maturation period are transplanted on an identical date, the effectiveness of nitrogenous fertilizers will also appear on an identical date, as a result of it, the longest leaf-blade will be found on upper nodes in short-term varieties, while it will be found on lower nodes in long-term varieties. For examining this point, the authors investigated nine varieties differing in the maturation period for three seasons, confirming the following facts. The longest leaf-blade is found on the second node from above in very short-term varieties, on the third node in short-term and medium-term varieties, and on the fourth node or fifth node in long-term varieties. In other words, the longest leaf-blade appears on the lower node as the variety becomes longer in the maturation period. As to the length of leaf-sheaths, the upper most one is always longest in most cases. But the second longest oneis found on upper nodes in short-term varieties and on lower nodes in long-term varieties as in case of leaf-blades. Since the growth of a leaf-sheath is synchronized with that of the immediate upper leaf-blade, the second longestleaf-sheath is found on the third node from above in very shortterm varieties, on the fourth node in short-and medium-term varieties, and on the fifth or sixth node in long-term varieties.
机译：在上文（第73号）中，作者指出，植物类型在奢华的生长条件下与成熟的颗粒的百分比密切相关，因此，植物类型的研究非常有必要最大化白饭。在另一篇论文（第58号和66号）中，他们还澄清了一个明确的生长阶段的氮气的顶部敷料使得植物伸长了一个明确的叶片，叶子鞘和节节，而氮气供应的限制缩短了每个他们。在这些事实的基础上，作者认为，在水稻种植中，只有基础肥料的应用而不是顶部敷料，如果在成熟时期的不同程度上发生相同的日期，含氮肥料的有效性结果也将出现在相同的日期，因此，最长的叶片将在短期品种的上部节点上找到，同时将在长期品种的下部节点上找到。为了审查这一点，作者调查了三个季节的成熟期内的九个品种，确认以下事实。在短期和中期品种的第三节点上，在非常短期的品种中，在上述第二节点上发现最长的叶片，以及长期品种的第四节点或第五节点。换句话说，由于在成熟时段中的变化变得更长，最长的叶片出现在下节点上。至于叶子护套的长度，在大多数情况下，大多数最长始终是最长的。但是，在短期品种的上部节点和长期品种的下节点上发现的第二个最长的oneis，如叶片叶片的情况下。由于叶子护套的生长与立即上叶片的叶片同步，因此在短期和中期品种的第四节点上从上方的第三节点中找到第二个长叶片在第三节点上，长期品种的第五或第六节节点。

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