施氮条件下不同株型水稻品种土壤还原性物质含量研究

以穗型直立的紧凑型水稻品种沈农07425和穗型弯曲的松散型水稻品种秋光为材料,研究不同施氮水平对两种株型水稻品种土壤还原性物质含量的影响。结果表明,紧凑型品种沈农07425土壤还原性物质总量随施氮量的增加而增加;松散型品种秋光高氮处理的土壤还原性物质总量明显低于中氮或低氮处理。沈农07425土壤活性还原物质含量随施氮量的提高而增加,而松散型品种秋光低氮处理的土壤活性还原物质含量明显低于中氮和高氮处理。品种与施氮水平互作对土壤还原性物质总量、活性还原物质含量产生一定影响,但土壤还原性物质总量、活性还原物质含量受施氮水平因素影响更大。

Study on Content of Reducing Substances between Different Plant Type Rice Under Several Nitrogen Levels

The compact rice Shennong 07425 with erect panicle and the loose rice Akihikari with curved panicle were used to study content of reducing substances under different nitrogen levels.The results obtained were described as follows.Total reducing substances of Shennong 07425 increases with the growing nitrogen level.Total reducing substances of Akihikari under the high nitrogen treatment reflects significantly higher than the middle or low nitrogen treatment.The active reducing substances of Shennong 07425 get larger with the increasing nitrogen level,The active reducing substances of Akihikari under the low nitrogen treatment reflects significantly smaller than the middle and high nitrogen treatment.The interactive effects between plant type of variety and N level produced certain influence on total reducing substances and the active reducing substances,and the N level had greater influence on total reducing substances and the active reducing substances than plant type.