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软盘机插条件下,以常规晚粳稻秀水134为试验材料,研究了不同施氮量对其生长发育及产量的影响。结果表明,随施氮量的增加,机插常规晚粳稻秀水134的单位面积有效穗数、每穗粒数和产量呈先增后减趋势,以纯N用量为255 kg/hm2的处理最高;生育期、最高苗数和株高呈增加趋势;成穗率、结实率和千粒重表现为随着施氮量增加而减少。综合来看,机插常规晚粳稻秀水134施氮量以255 kg/hm2为宜。
Under the condition of floppy disk, the effect of different nitrogen rates on the growth and yield of late rice Xiushui 134 was studied. The results showed that with the increase of N application rate, the number of panicle per unit area, the number of grains per panicle and the yield per spike of conventional late japonica rice Xiushui 134 increased first and then decreased with the increase of nitrogen application rate, and the highest N rate was 255 kg / hm2. The highest seedling number and plant height showed a trend of increasing. The spike rate, seed setting rate and 1000-grain weight decreased with the increase of nitrogen application rate. Taken together, it is advisable to use 255 kg / hm2 nitrogen fertilizer to machine conventional late rice Xiushui 134.