摘要
1%的镁改性花生壳炭(M-PB)添加到土壤中,通过土柱淋溶实验研究其对土壤持水能力以及对硝态氮、氨氮等不同氮肥和磷肥的保肥作用。实验结果表明,土壤中添加M-PB,会提高土壤的持水能力;与土壤中不添加生物炭的实验组对比,M-PB对PO^34--P的持留作用最显著,能对土壤中PO^34--P累计淋失量减少46.6%,NO3^--N次之,减少量为40.3%,对NH4^+-N的减少量为39.3%。因此,M-PB对土壤有较强的保水固肥作用。
1%magnesium modified peanut shell biochar(M-PB)was added to the soil,and its water-holding capacity of soil and preserving fertilizer effect on different nitrogen,such as nitrate and ammonia,and phosphorus fertilizers,were studied by soil column leaching experiment.The experiments results show that the addition of M-PB to the soil will increase the water holding capacity of the soil;compared with the experimental group without the addition of biochar in the soil,M-PB has the most significant holding effect on PO^34--P,and could reduce the cumulative leaching loss of PO^34--P in soil by 46.6%,NO-3-N by 40.3%,and NH^+4-N by 39.3%.So M-PB has a strong effect of water and fertilizer on the soil.
作者
李振伟
郑德康
卢晓伟
Li Zhenwei;Zheng Dekang;Lu Xiaowei(Sunrui Marine Environment Engineering Co.,Ltd.,Qingdao266101,China)
出处
《山东化工》
CAS
2020年第22期90-92,共3页
Shandong Chemical Industry
关键词
M-PB
持水能力
肥力
M-PB
water-holding ability
fertilizer
