In: Cropping Systems ISBN: 978- 1 - 63485 - 888 - 5
Editor: Johanna G. Hodges © 2017 Nova Science Publishers, Inc.
Chapter 5
INCREASED SOIL FERTILITY IN
A LONG-TERM RICE-OILSEED RAPE
CROPPING SYSTEM AND ITS POTENTIAL
ROLES IN REDUCING NITROGEN INPUTS
AND ENVIRONMENTAL IMPACTS
Min Huang1,*, Xuefeng Zhou^1 , Xiaobing Xie^1 ,
Jiana Chen^1 , Fangbo Cao^1 and Yingbin Zou^1
(^1) Southern Regional Collaborative Innovation Center for Grain
and Oil Crops (CICGO), Hunan Agricultural University,
Changsha, China
ABSTRACT
Rice-oilseed rape rotation is one of the long-established major
cropping systems in China. Here, we (1) determined the soil fertility
change in a long-term rice-oilseed rape cropping paddy field at the
research farm of Hunan Agricultural University, China from 2004 to
2015, and (2) conducted a field and a^15 N micro-plot experiment to
compare yield attributes, N uptake and fertilizer-N fate among three N
rates, i.e. 150 kg ha–^1 (recommend N rate), 120 kg ha–^1 (80% of the
recommend N rate) and 90 kg ha–^1 (60% of the recommend N rate), on- E-mail: [email protected].