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在常规栽培条件下,采用盆栽模拟试验方法,研究了土壤脲酶活性和碱解氮含量在不同施氮水平下随水稻生长的动态变化,结果表明:随着施氮量的增加,土壤碱解氮含量增加,高氮处理的含量最高;而脲酶活性则表现为中氮处理的整体水平高于高氮处理,施氮量在0~214.65 kg/hm2的范围内,脲酶活性随着氮素水平的升高而增强,两种水稻品种相比较,弯穗型不抗倒伏的秋光对氮素的敏感程度显著高于直立穗型抗倒伏的07425。
Under normal cultivation conditions, pot experiment was conducted to study the dynamic changes of soil urease activity and alkaline hydrolysis nitrogen content with the growth of rice under different nitrogen application levels. The results showed that with the increase of nitrogen application amount, While the content of urease increased with the increase of nitrogen content. The urease activity showed that the overall level of intermediate nitrogen treatment was higher than that of high nitrogen treatment, and the nitrogen application rate was in the range of 0 ~ 214.65 kg / hm2. The urease activity increased with the increase of nitrogen level Increased and increased. Compared with the two rice cultivars, the light sensitivity of the bent leaves to non-lodging autumn light was significantly higher than that of the erect panicle-type 07425.