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首页> 外文期刊>日本作物學會紀事 >Studies on the Germination of Barnyardgrass Seeds : 1. On the germination of barnyardgrass seeds sown in the irrigated and non-irrigated soils.
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Studies on the Germination of Barnyardgrass Seeds : 1. On the germination of barnyardgrass seeds sown in the irrigated and non-irrigated soils.

机译：稗草种子的萌发研究：1。对灌溉和非灌溉土壤播种的稗草种子的萌发。

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The germination (emergence) of one wild species and four cultivated variety barnyardgrass seeds was examined under the different soil conditions. The results obtained are as follows: 1. Any difference of the velocity of germination could not be found between 60% soil moisture (by weight) plot and moistened plot to soil capacity. But the velocity was recognized to be decreased with the depth of irrigation. At the early stage of germination period, the remarkable decrease of velocity was not caused by the low daily mean soil temperature but by the irrigation. But, the reverse relationship of the decrease observed latter was thought to be mainly based on the slight rising of the daily mean soil temperature and the increased amount of the accumulated daily mean soil temperature during several days. On the other hand, the decrease of velocity by the application of inorganic fertilizer on the non-irrigated plots was slight. But, the application on the irrigated plots caused the comparatively great decrease and especially remarkable decrease in the irrigated low soil temperature plots. As the results of these, the velocity with the application of inorganic fertilizer resulted in the slight decrease. Except very late variety Daruma showing specially great decrease of germination velocity due to irrigation, low soil temperature and application of inorganic fertilizer, there was no relationships between the velocity of germination of any variety and the heading date. 2. The greatest decrease of germination percentage was caused by the irrigation and the decrease by the application of inorganic fertilizer was not so remarkable. Moreover, the decrease by the low soil temperature was very slight. The decrease of the germination percentage caused by the application of ammonium sulphate was greater than the case of ammonium nitrate. As to the non-irrigated plots, the arrangement of plots in sequence from the low soil temperature plot without any application of fertilizer showing the highest germination percentage, is as follows; the low soil temperature plot with application of inorganic fertilizer, the high soil temperature plot with the application and the high ones without any application. As to the irrigated plots, the arrangement of plots in sequence from the high soil temperature plot without any application of fertilizer showing the highest germination percentage, is as follows; the low soil temperature plot without any application, the high ones with the application and the low ones with the application. The decreasing effect of germination percentages due to irrigation, soil temperature and application of inorganic fertilizer was found to be differed with materials.
机译：在不同土壤条件下检查了一种野生物种和四种栽培品种稗草种子的发芽（出苗）。所获得的结果如下：1。在60％土壤水分（重量）地块和湿润的地块到土壤容量之间，萌发速度的任何差异都不能发现。但是，速度被认识到随着灌溉的深度而降低。在萌发期的早期阶段，速度显着降低不是由每日平均土壤温度低但受灌溉引起的。但是，逆转的后续后者的逆向关系是主要基于日常平均土壤温度的轻微上升，并且在几天内累积的每日平均土壤温度的增加量。另一方面，通过在非灌溉地块上施加无机肥料的速度降低略微。但是，在灌溉地块上的应用导致灌溉低土壤温度图中的相对较大的降低，特别显着降低。随着这些结果的结果，施用无机肥料的速度导致略微减少。除了非常晚期的Daruma，由于灌溉，低土壤温度和无机肥料的施用而显着降低发芽速度，在任何品种和标题日期的萌发速度之间没有任何关系。 2.发芽率的最大降低是由灌溉引起的，并且通过施用无机肥料的降低并不是如此显着。此外，低土壤温度的降低非常轻微。由硫酸铵施用引起的发芽率的降低大于硝酸铵的情况。对于非灌溉的图，从低土壤温度图序列的序列排列，无需任何施用的肥料，显示出最高的发芽率，如下所提;低土壤温度图施用无机肥料，高土壤温度绘制与应用和高等施用无需任何应用。对于灌溉的图，从高土壤温度绘图序列排列的曲线的布置，无需任何施用肥料，显示出最高的发芽率，如下;低土壤温度图没有任何施用，高于施用和施用的低的涂层。发现萌发百分比引起的灌溉率降低，土壤温度和无机肥料施用的影响有所不同。

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