关键词: 晚粳稻, 氮肥, 产量, 产量构成

Abstract:

In order to apply nitrogen fertilizer reasonably and achieve the purpose of reducing the amount of fertilizer and increasing the efficiency of fertilizer, an experiment was conducted to study the effects of nitrogen fertilizer amount on the yield of different types late japonica rice in the northern Zhejiang. The results showed that the nitrogen tolerance traits of different types of late japonica rice were as follows: bending head late japonica variety Jiahe 218＞ indica-japonica hybrid variety Yongyou 538＞erect panicle late japonica variety Xiushui 134, Xiushui121＞semi-erect panicle late japonica variety Yongnuo 34. The yield components of late japonica rice in the northern Zhejiang are mainly determined by varieties and have little relationship to the amount of nitrogen fertilizer. The amount of nitrogen fertilizer could be reduced appropriately in indica-japonica hybrid rice varieties, erect and semi-erect panicle late japonica rice varieties, and suitable urea is 30 kg/667 m2.

Key words: late japonica rice, nitrogen fertilizer, yield, yield components