共 8 条
[6]
土壤酶及其研究法[M]. 农业出版社 , 关松荫 编著, 1986
[7]
Significance of N source (urea vs. NH4NO3) and Ni supply for growth, urease activity and nitrogen metabolism of zucchini (Cucurbita pepo convar. giromontiina)[J] . J. Gerendás,B. Sattelmacher.Plant and Soil . 1997 (2)