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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 : CXVII. The effects of the growth potency (amount) at the starting time of the nitrogen restriction treatment and the nitrogen concentration of nutritional solution during the treatment on the further growth of rice plants
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Analysis of Yield-Determining Process and Its Application to Yield-Prediction and Culture Improvement of Lowland Rice : CXVII. The effects of the growth potency (amount) at the starting time of the nitrogen restriction treatment and the nitrogen concentration of nutritional solution during the treatment on the further growth of rice plants

机译：产量测定过程分析及其在低地稻米产量预测和培养改善中的应用分析：CXVII。生长效力（量）在氮限制处理的开始时间和营养溶液中治疗过程中的氮浓度的影响

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In the previous paper, the authors estimated that the effect of the nitrogen depletion treatment on the further growth might vary according to the growth potency (e.g., growth amount such as the dry weight of plants or the number of tillers) at the starting time of the treatment and the length of the treatment. From the same point of view as in the previous paper, furthermore, the authors tried some experiments to clarify the effect of the growth potency at the starting time (70 in leaf number index) of the nitrogen restriction treatment and the nitrogen concentration of nutritional solution during the treatment on the further growth of rice plants. Achieving this purpose, the rice plants with different amount of growth at LNI 70, raised by the different amount of nitrogen supply under gravel culture, were supplied with different levels of nitrogen solution during the period of the middle growth stage (70-90 in LNI). The following results were obtained: 1. The lower the nitrogen concentration of the nutritional solution during the treatment, the less in the dry weight, the total activity of 32P in rice plants and the amount of oxygen consumed by roots, at the expiry of the treatment. 2. Under an identical nitrogen concentration during the treatment, the smaller the growth amount at LNI 70 was, the greater the decrease was found in the dry weight, total activity of 32P and the amount of oxygen consumed by roots, respectively. And the longer in the length of the treatment, the higher effect of growth retardation was obtained. 3. Judging from the amount of 32P uptake and the oxygen consumed by roots, in the plants fed with 30 ppm of nitrogen before the treatment, conspicuous effects of the treatment on the plant growth appeared in 2 weeks after the starting time of the treatment, and the rice plants seemed to be able to recover from the growth retardation by the treatment in the case of 3 week-treatment. And also in the plants fed with 60 ppm of nitrogen before the treatment, the effect of the treatment was detected in 3 weeks after the starting time of the treatment and the rice plants seemed to be able to recover from the growth retardation even in 4 week-non-nitrogen treatment. 4. Compairing with the ratio of the growth amount of the plants fed with 0, 5 and 10 ppm of nitrogen during the treatment against that of control (which was supplied with 60 ppm of nitrogen before the treatment and 30 ppm during the treatment, abbr. 60-30 ppm), the indices of the growth amount of 60-0 ppm and 30-10 ppm showed nearly identical values, at 10 day nourishment with 30 ppm of nitrogen solution after 3 week-treatment. 5. Examining the effect of the nitrogen restriction treatment on the growth of rice plants, it is necessary to consider the following 3 factors; the growth amount at the starting time of the treatment, the nitrogen concentration of nutritional solution during the treatment and the length of the treatment period.
机译：在上一篇文章中，作者估计氮耗尽处理对进一步生长的影响可能根据生长效力（例如，生长量，例如植物的干重或分蘖数）的开始时间治疗和治疗的长度。此外，从同一张角度来看，作者尝试了一些实验，以阐明氮气限制处理的起始时间（叶片数指数70的叶片数指数中的生长效力和营养溶液的氮浓度在治疗水稻植物的进一步生长期间。实现此目的，LNI 70的生长量不同的水稻植物，通过砾石培养物的不同量的氮供应提高，在中间生长期期间提供了不同水平的氮溶液（LNI中70-90 ）。获得以下结果：1。治疗过程中营养溶液的氮浓度降低，干重的较少，水稻植物中32p的总活性和根部消耗的氧气量在截止日期治疗。在治疗过程中的相同氮浓度下，LNI 70的生长量越小，在干重，32P的总活性和根部消耗的氧量的降低越大。并且在治疗的长度中越长，获得了延长的生长迟滞的效果。 3.根据<32> p ppm的<32> Pp吸收量判断，在植物中喂养30ppm的氮在治疗前，治疗对植物生长的显着效果出现在起始时间后2周后出现治疗和水稻植物似乎能够在3周治疗的情况下通过治疗从生长延迟中恢复。并且还在治疗前用60ppm的氮喂养的植物中，在治疗开始时间后3周内检测治疗的效果，即使在4周内也能够从生长迟缓中恢复生长迟缓 - 氮治疗。 4.在治疗期间，在治疗中喂养0,5和10ppm氮气的植物的生长量的比例（在治疗前用60ppm提供了60ppm的氮气和30ppm，治疗期间，ABBR 。60-30ppm），增长量为60-0ppm和30-10ppm的索引显示出几乎相同的值，在3周处理后10天营养，30ppm氮溶液。 5.检查氮气限制处理对水稻植物生长的影响，有必要考虑以下3个因素;治疗开始时的生长量，治疗过程中营养溶液的氮浓度和治疗期的长度。

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