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首页> 外文期刊>日本作物學會紀事 >Influence of the Water Percolation on the Growth of Rice Plant in Rice Field : II. The effects of water plercolation of various amounts on the growth and yield of rice, and on NH3-N, H2S and free-CO2 in soil
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Influence of the Water Percolation on the Growth of Rice Plant in Rice Field : II. The effects of water plercolation of various amounts on the growth and yield of rice, and on NH3-N, H2S and free-CO2 in soil

机译：水渗滤对稻田水稻植物生长的影响：II。各种量对水稻生长和产率的水纤维，土壤中的NH3-N，H2S和自由二氧化碳的影响

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The effects of water percolation under a submerged condition on the rice growth and an nutrient and toxic substnces in various kind of soils were studied by means of frame and glass lysimeter experiments. The results obtained were as follows. 1) The water percolation decreased the amount of NH3-N in soil when ammonium sulphate was applied in a large amount, or when the percolation rate was high. In cases of re-irrigation or of circulation where water being drained through the bottom of the glass lysimeter, was poured back to the soil surface, the arnount of NH3-N in soil decreased significantly. It was interpreted to be due to the denitrification and/or immobilization of the compound by microorganisums in the surface soil. 2) It was found that the higher the percolation rate, the less was the amount of free-C02 in soil water. 3) Swampy soils rich in organic matetrs and poor in iron content lead to the production of large amounts of H2S in soil water when temperatur was high. H2S in soil water was decreased remarkably by the treatment of water percolation only when larger amounts of H2S were evolved, and was increased slightly when smaller amounts of H2S were evolved. 4) The water percolation increased the grain yield of rice only when larger amounts of toxic substances were evolved on swampy soils, while no changes were observed on soils poor in organic matters. On swampy soils, relatively large amounts of water percolation were favourable for the rice yield. 5) Helminthosporium leaf spot disease occured on swampy soils less in silica contents and water percolation was effective to sorne extent for reducing the occurence.
机译：通过框架和玻璃溶血仪实验研究了水稻生长下水稻生长条件下水稻生长和营养和有毒代应对的影响。获得的结果如下。 1）当硫酸铵以大量施用硫酸铵或渗透速率高时，水渗透量降低了土壤中的NH 3-N的量。在重新灌溉或循环的情况下，通过玻璃尿素底部排出水的水，倒回土壤表面，土壤中的NH3-N的Arnount显着下降。它被解释为由于表面土壤中的微内石制脱硝化和/或固定化合物。 2）发现渗透速率越高，土壤水中的自由CO 2越少。 3）富含有机成熟的沼泽土壤，铁含量差导致水中温度较高的土壤水中的大量H2S。在水渗滤中仅当进化大量的H 2 S时，土壤水中的H2S显着降低，并且当进化较少量的H 2 S时略微增加。 4）仅当在沼泽土壤中演化的较大量的有毒物质时，水渗透量增加了大米的籽粒产量，而有机问题的土壤中没有观察到任何变化。在沼泽的土壤上，相对大量的水渗透性有利于水稻产量。 5）在二氧化硅含量下较少的沼泽土中发生蠕虫孢子叶点疾病，水渗透对于减少发生的躯干而有效。

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