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首页> 外文期刊>日本作物學會紀事 >Supplemental Nitrogen Fertilizer to Soybeans : I. Effect of Side-dressing at early ripening stage on yield, yield components and protein content of seeds
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Supplemental Nitrogen Fertilizer to Soybeans : I. Effect of Side-dressing at early ripening stage on yield, yield components and protein content of seeds

机译：对大豆的补充氮肥：I。侧衣在早期成熟阶段对产量，产量组分和种子蛋白质含量的影响

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Effect of nitrogen side-dressing at 10 days after flowering on yield, yield components and protein content of seeds was examined using 12 varieties and ammonium sulfate. 1. Mean yield among 12 varieties supplemented with 120 kg nitrogen per ha increased by 6.7 percent or 250 kg per ha (Table 1). The most affected variety was Chippewa (13.2%) and the least was Waseshiroge (0.1%) (Fig. 1). 2. As to the early or medium varieties, yield increase was mainly due to the increase of 100 seeds weight. As to the late varieties, on the other hand, it was mainly due to the increase of pod number (Fig. 1). 3. Nitrogen or protein content of seeds increased by 3.3 percent on the average of 12 varieties supplemented with 120 kg nitrogen per ha. Protein yield per unit land area increased also by 10.3 percent (Table 2). 4. Effect on yield of supplemental nitrogen was the largest on the least fertile plots, and vice versa. On the least fertile plots all of the yield components, pod number, number of seeds per pod and 100 seeds weight increased. On the most fertile plots, on the other hand, pod number decreased, which negated the increase of 100 seeds weight, hence the least yield increase (Fig. 3). 5. Taking into account of the increase of total revenue due to the increase of yield and input cost for ammonium sulfate and labour for its dressing, the most reasonable amount of supplemental nitrogen was supposed to be around 100 kg per ha. In this case the increase of net revenue was about 35, 000 yen per ha.
机译：使用12个品种和硫酸铵，检查氮侧面敷料在产量下10天的影响，产量组分和种子的蛋白质含量。 1.平均平均产量补充有120kg氮的每公顷，每公顷增加6.7％或250千克（表1）。最受影响的种类是Chippewa（13.2％），最少的是呈岩石（0.1％）（图1）。 2.关于早期或中等品种，产量增加主要是由于100种种子重量的增加。另一方面，对于晚期品种，它主要是由于荚数的增加（图1）。 3.种子的氮气或蛋白质含量增加了3.3％，平均值为每公顷120kg氮的12个品种。每单位土地面积的蛋白质产量也增加了10.3％（表2）。 4.对补充氮的产量的影响是最少的肥沃地块最大的影响，反之亦然。在最少的肥沃地块上，所有产量组分，荚数，每种豆荚的种子数量和100种重量增加。另一方面，在最肥沃的地块上，豆荚数减少，这否定了100种种子重量的增加，因此屈服增加（图3）。 5.考虑到总收入的增加，由于硫酸铵和劳动力的产量和劳动成本增加，最合理的补充氮气应该是每公顷100千克。在这种情况下，净收入的增加约为35,000日元。

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