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在30*12密度下处理2的水稻吸氮量最高,为9.87 Kg/667 m2,处理4最低,氮肥利用率最高的是处理6,为47.6%,在30*14密度下处理2的水稻吸氮量最高,氮肥利用率最高的是处理5,为33.2%,在施肥量相同的条件下除处理5外,其余的处理在30*12密度下的吸氮量和氮肥利用率均比30*14密度下的高,两种密度下土壤供氮量分别为6.47 Kg/667 m2和5.96 Kg/667 m2,同一肥量水平下,无论是30*12密度还是30*14密度只有处理2的产量比对照高,分别高22.20 Kg/667 m2和39.50 Kg/667 m2,增产率为3.1%和5.9%,在同一密度下,产量最高的也是处理2,分别为748.70 Kg/667 m2和709.80 Kg/667 m2,说明适当增施氮肥和增加群体密度可以有助于产量的提高。
The highest nitrogen uptake of rice at 30 * 12 density was 9.87 Kg / 667 m2, the lowest at 4, and the highest nitrogen utilization rate was at 6, which was 47.6%. Rice at 30 × 14 density treated 2 Nitrogen content is the highest, the highest utilization rate of nitrogen fertilizer is 5, 33.2%, under the same conditions of fertilizer addition to treatment 5, the other treatments at 30 * 12 density of nitrogen uptake and nitrogen use efficiency than 30 * Under the same fertilization level, the yield of soil nitrogen at two different densities was 6.47 Kg / 667 m2 and 5.96 Kg / 667 m2, respectively. No significant difference was observed between the density of 30 × 12 and the density of 30 × 14 Higher than that of the control, which were 22.20 Kg / 667 m2 and 39.50 Kg / 667 m2, respectively. The yield was 3.1% and 5.9% respectively. The highest yield was also treated as 748.70 Kg / 667 m2 and 709.80 Kg / 667 m2, indicating that the appropriate application of nitrogen fertilizer and increase population density can help increase the yield.