摘要
At two fertility levels, the concentrations of phenolic acids in the field of summer corn with returning wheat residues were measured, and the growth of seedlings and the yield were investigated. The results showed that: the maximum release of the phenolic acid occurred at the 41st day after returning wheat residues. Fertilizer application could lower the content of the phenolic acid in the soil. Returning wheat residues had no obvious effects on the germination rate of the corn, but could inhibit the growth of seedlings.When no fertilizers were applied, returning wheat residues could increase the corn yield, N and P content in the seed and N and P uptake from cropland. However, the same result couldn’t be obtained when fertilizers were applied.The phenolic acids, which were produced in the process of decomposing of wheat residues, may cause such inhibitions.
At two fertility levels, the concentrations of phenolic acids in the field of summer corn with returning wheat residues were measured, and the growth of seedlings and the yield were investigated. The results showed that: the maximum release of the phenolic acid occurred at the 41st day after returning wheat residues. Fertilizer application could lower the content of the phenolic acid in the soil. Returning wheat residues had no obvious effects on the germination rate of the corn, but could inhibit the growth of seedlings.When no fertilizers were applied, returning wheat residues could increase the corn yield, N and P content in the seed and N and P uptake from cropland. However, the same result couldn't be obtained when fertilizers were applied.The phenolic acids, which were produced in the process of decomposing of wheat residues, may cause such inhibitions.
出处
《生态学杂志》
CAS
CSCD
北大核心
2001年第3期9-11,8,共4页
Chinese Journal of Ecology
基金
中国科学院资源环境局"九五"重点项目! ( KZ-95 2 -S1-2 3 0 )
