共 9 条
[4]
陕西土壤[M]. 科学出版社 , 郭兆元主编, 1992
[5]
Response of maize kernel number to plant density in Argentinean hybrids released between 1965 and 1993[J] . L. Echarte,S. Luque,F.H. Andrade,V.O. Sadras,A. Cirilo,M.E. Otegui,C.R.C. Vega.Field Crops Research . 2000 (1)
[6]
Nitrous oxide emissions from three rice paddy fields in China
[J].
Nutrient Cycling in Agroecosystems,
1997, 49
:23-28
[7]
Preliminary studies on N 2 O emission fluxes from upland soils and paddy soils in China[J] . G. X. Xing,Z. L. Zhu.Nutrient Cycling in Agroecosystems . 1997 (1)
[9]
Nitrate in soil profiles and nitrate pollution of drinking water in the loess region of China. Emteryd O, Lu D Q, Nykvist N. Ambio . 1998