• 主题
高级搜索  >
历史搜索 清空历史
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. : LXXX. An experiment on maximizing yield by controlling the plant growth to form an 'ideal plant type' by means of the application of nitrate nitrogen in an ordinary paddy field
【24h】

Analysis of Yield-Determining Process and Its Application to Yield-Prediction and Culture Improvement of Lowland Rice. : LXXX. An experiment on maximizing yield by controlling the plant growth to form an 'ideal plant type' by means of the application of nitrate nitrogen in an ordinary paddy field

机译：产量测定过程分析及其应用于低地米的产量预测和培养改善。 ：lxxx。一种通过控制植物生长来最大化产量的实验，通过在普通稻田中的应用形成“理想植物型”

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the previous report the authors reported that one could easily obtain high yields by using a circulating irrigating method combined with the application of nitrate nitrogen. By this method one could exactly take the nitrogen off the soil at a given growth stage for controlling the growth of rice plants. In the present experiment, furthermore, the authors tried to apply the same principle as the above to an ordinary paddy field without the circulating irrigation method. The main points in conducting the experiment were the following three points: (1) In order to ensure the necessary and sufficient number of bearing-tillers for obtaining a terget yield by the time of 70 in 'leaf-number-index', and to take nitrogen off the soil without difficulty during the critical period in which the plant type after heading is definitely predetermined, much amount of nitrate nitrogen in stead of ammonium nitrogen was given at the early growth stage. (2) In order to take nitrogen off the soil immediately during the critical period, logged water which contained nitrate nitrogen in the paddy field was completely drained out, and fresh water which contained no nitrogen was again irrigated. (3) In order to increase the rate of carbon assimilation after the critical period, nitrogen was again top-dressed at the end of the critical period (about 20 days before heading) and at the full heading time. Water permeability in the experimental field was at a rate of 10∼15 mm per day. The results might be summarized as follows. 1. Nitrate nitrogen applied at the early stage of growth was quite effective for increasing the number of tillers, and it could be taken off the soil by exchanging logged water in the field for fresh water at the begining of the critical period. The success in restricting the nitrogen supply in the paddy field mentioned above could be recognized directly by the remarkable decrease in the nitrogen content of leaf-blades, and be checked indirectly by the discoloration of the plant and the retardation in increasing rate of the number of tillers and the dry-matter during the period, and furthermore by shortening of leaf-blades, culms and internodes in length at maturity. 2. Accordingly, the type of plants was improved to a near ideal type by the above-mentioned treatment, and, as a result of it, treated plots were higher than the control in the percentage of ripened grains and in the grain yield as seen in table 3. 3. It was quite noticeable that the treated plants (1) had gained a high lodging resistance which was mainly ascribed to the shortening of lower internodes in length, and (2) has yielded high percentages of ripened grains which was largely ascribed to abundant accumulation of starch in culms and leaf-sheaths before heading. 4. From the results of the present experiments it was strongly proved that if one would utilize nitrate nitrogen at the early stage of growth, one could make the plant type ideal with ease by taking nitrogen off the soil at the critical period, and could obtain high grain yield through the "ideal plant".
机译：在上一份报告中，作者报告说，通过使用循环灌溉方法可以容易地获得高产量，该方法与硝酸氮的施加相结合。通过这种方法，可以在给定的生长期下，在给定的生长阶段将氮气脱落，以控制水稻植物的生长。此外，在本实验中，作者试图将与上述相同的原理施加到没有循环灌溉方法的普通稻田。进行实验的主要观点是以下三点：（1），以确保在“叶子号码指数”中的70时获得必要和足够数量的轴承分蘖，以便在70中获取TETET产量。在植物类型绝对预定的关键时期毫无困难地取出土壤毫无困难，在早期生长阶段给出了氮氮中的大量硝酸盐氮。 （2）为了在关键时期立即脱离土壤，含有稻田中硝酸盐氮的降落的水被完全排出，并且再次灌溉含有氮的淡水。 （3）为了提高关键时期后碳同化率，氮在关键时期结束时再次穿着（标题前约20天）和全场时间。实验领域的水渗透率为每天10〜15毫米。结果可能总结如下。 1.在生长早期施用的硝酸盐氮对于增加分蘖数非常有效，可以通过在关键时期开始在淡水中交换淡水中的降落的水来消除土壤。在上述稻田中限制氮供应的成功可以直接通过叶片的氮含量的显着降低直接识别，并且通过植物的变色和增加速度的延迟间接检查在此期间分蘖和干物质，而且通过在成熟时缩短叶片，秆和细节。因此，通过上述治疗，植物类型改善到近乎理想的类型，并且由于其，处理的图高于成熟的晶粒百分比和谷物产量的控制在表3. 3. 3.植物（1）获得了高封装抗性，主要归因于较低的细节区的缩短，（2）产生高百分比的成熟颗粒在很大程度上在标题之前归因于秆和叶子护套的淀粉积累。 4.从本实验的结果，强烈证明，如果人们将在生长期的早期使用硝酸盐氮，可以通过在关键时期的土壤中取出氮气来缓解植物类型，并可以获得通过“理想植物”的高颗粒产量。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号