期刊论文

Effects of Dry-wetting Processes on Black Soil Nutrient Leaching

中文

水土保持学报

Journal of Soil and Water Conservation

1009-2242

2012

17

3

26-29

松辽平原农牧结合循环技术集成与示范项目(2012BAD14B05)；

本校为其他机构

通过室内土柱模拟养分淋溶的方法,对干湿交替作用后,黑土中各种养分的淋失情况进行研究。结果表明：干湿交替作用明显提高了黑土淋溶液中各种养分的含量,其中钾含量提高最显著,高于对照6倍,硝态氮和铵态氮含量都比对照提高了2倍,而水溶性磷浓度无明显变化;黑土经干湿交替作用后明显加快了水分及养分向下运移的速度,并导致淋溶液中各种养分的累计含量显著增加,其中钾素增加最多,淋失累计含量达到对照的40倍以上;此外,干湿交替作用对不同养分淋失的影响效果也不同,对阳离子养分的影响比对阴离子的影响更为显著。以上研究结果说明,干湿交替作用提高了黑土中养分淋失的数量,同时也加大了地下水污染的...

In order to find the effect of dry-wetting processes on black soil nutrient leaching,A column experiment was conducted to understand the processes of nutrient leaching.The research shows that dry-wetting processes had an obvious effect on increasing the contents of nutrient leaching,the potassium which increased the most was 6 times greater than the control.The NO-3-N and the NH＋4-N were more than two times as many as the control.Dry-wetting processes also increased the speed of nutrient leaching,which increased the amount of the nutrient leac...