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首页> 外文期刊>日本作物學會紀事 >Analysis of Developmental Factors Determining Yield and Its Application to Yield Prediction and Culture Improvement of Lowland Rice : LIX. Study on the non-water-logged cultivation for decreasing the damage of lowland rice caused by low irrigation-water temperatures.
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Analysis of Developmental Factors Determining Yield and Its Application to Yield Prediction and Culture Improvement of Lowland Rice : LIX. Study on the non-water-logged cultivation for decreasing the damage of lowland rice caused by low irrigation-water temperatures.

机译：确定产量的发育因子分析及其应用于产量预测和培养文化改进的低地米：LIX。低灌水温度降低低地稻损伤的非水记录培养研究。

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For establishing a method of decreasing the damage of rice plant caused by low irrigation-water temperatures, the authors examined the effects of non-water-logging in every half-day period or a whole period at the different growth stages of the plant on its growth, grain yield and yield-components and compared the effects with those continuously water-logged with an optimum and a low temperature under a field condition as well as potted conditions. Results obtained might be summarized as follows: 1. At the stage just after transplanting every non-water-logged plot was much poor in rooting and in growth at an early stage than that water-logged with an optimum water temperatur, on account of that the former was lacking in soil moisture in spite of being high in soil temperature. 2. Both at the tillering stage and the stage from spikelet differentiation to heading, the potted plants grown under the non-water-logged condition with soil moistures higher than P.F. 1.70 (in the value of tension-meter) were higher in grain-yield than those grown under an optimum water temperature as well as under a low water temperature on account of the fact that in the non-water-logged plots the number of panicles and spikelets per hill much increased (Fig. 1.). On this occasion it is likely worth noticing that the rice plants subjected to non-water-logging showed a relatively high percentage of ripened grains in spite of a remarkable increase in the number of spikelets per hill, because in general there exists a negative correlation between those two components. The fact may be ascribed to the favorable effects of the non-water-logged treatment on the soil condition, nutrition and conseqently to carbon assimilation activity of rice plants. Furthermore, it is also presumedly noteworthy that no unfavorable effect of non-water-logged treatment was observed in the important period from the spikelet differentiation stage to the heading stage in which in general a deep water-logging practice has hitherto been recomended to farmers. 3. At the ripening stage potted rice plants grown under non-water-logged condition were a little lower in the percentage of ripened grains and in yield than those under watter-logged condition, while the plants grown under the field condition did not show such a tendency at all. 4. The non-water-logged treatment carried out during the whole growth period brought forth worse effects in yield as well as in growth than those brought forth by the water-logged treatment even with a low water temperature. It will be necessary, therefore, to examine not only the accumulative effect of non-water-logged treatment through the whole growing period but also the effects of that as influeneed by different kinds of soil, soil moisture etc. From the results above mentioned it should be taken into consideration that the non-water-logged cultivation for some period is quite effective not only for decreasing the damage due to cool irrigation water but also for saving the amount of water which is now becoming a new problem in our country.
机译：为建立一种降低灌溉水温造成的水稻植物损害的方法，作者在其上进行了每半天期间或整个周期的每半天期间或整个期间的造成的影响生长，籽粒产量和产量 - 组分，并将这些效果与现场条件以及盆栽条件下的最佳和低温连续进行水。获得的结果可以概括如下：1。在移植后，在移植后的阶段，在早期的阶段的生根和生长方面都差，而不是用最佳水温的初期进行增长由于土壤温度高，前者缺乏土壤水分。 2.在分蘖期和阶段从小穗分化到航线，盆栽植物在非水状况下种植，土壤水分高于p.f。 1.70（在张力计的值中）籽粒产率高出比在最佳水温下生长的那些在低水温下的谷物产量，因为在非水记录的曲线中的事实下每山的小穗增加（图1.）。在这种情况下，值得注意的是，由于每艘山丘的小穗数量显着增加，因此可能对非水测井进行了稻米植物的成熟颗粒，因为一般来说在这两个组成部分。这一事实可能归因于对土壤条件，营养和征服对水稻植物碳同化活性的非水降调治疗的有利影响。此外，还假定有人值得注意的是，在尖头分化阶段到标题阶段的重要时期，没有对其的重要期间观察到非水登录治疗的不利影响，其中一般来说，迄今为止已经向农民推荐了深水测井实践。 3.在成熟的阶段盆栽水稻植物在非水状状态下生长的百叶菌的成熟颗粒的百分比略低，而且产量低于下降条件下的百分比，而在现场条件下生长的植物没有显示出这样的植物一点趋势。 4.在整个生长期间进行的非水注记治疗在产量和生长中产生的效果差，而不是通过水注入处理的效果，即使是低水温。因此，必须通过整个生长期间检查非水记录治疗的累积效果，也是通过其他种类的土壤，土壤水分等的影响。从上面提到的结果应考虑到，某个时期的非水路培养不仅适用于降低由于凉爽的灌溉水而导致的损坏，而且为了节省现已成为我国新问题的水量。

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