Abstract:

Nitrogen is a limiting factor for rice production. In order to confirm the effects of different nitrogen fertilizerapplication on rice yield, we take this experiment on midding fertility paddy fields. The results showed that restriction of nitrogen fertilizer amount on rice yield is 180 kg/hm2. Since the result is obtained from only one year on new rice variety Songliao 6, further research is required to find whether it is the best application amount of nitrogen, in order to reach a more reasonable conclusion,and increase the rice yield.

Key words: rice, Songliao 6, nitrogen application amount, production

摘要：

氮肥是水稻产量的限制因子,试验研究了在水稻田中等肥力条件下,施用不同的纯氮量对水稻产量的影响。结果表明,限制水稻产量的纯氮施用量为180 kg/hm2,但这仅是对水稻新品种松辽6号一年的试验结果,是否为最佳施用纯氮量,需待进一步试验研究,以期得出更合理的结论,提高水稻产量。

关键词: 水稻;松辽6号;氮肥施用量;产量