湖南祁阳县土壤酸化主要驱动因素贡献解析
周海燕,徐明岗,蔡泽江,文石林,吴红慧

Quantitative Analysis of Driving-Factors of Soil Acidification in Qiyang County, Hunan Province
ZHOU HaiYan,XU MingGang,CAI ZeJiang,WEN ShiLin,WU HongHui
表8 不同农作物体系的关键致酸过程的H+产生量
Table 8 H+ production of acidity-inducing factors among the six main crop systems
作物类型
Crop system
氮循环过程
N cycling process
盐基吸收
BC uptake (kmol·hm-2·a-1)
盐基吸收贡献率 BC uptake contribution (%) 磷吸收
P uptake process
(kmol·hm-2·a-1)
H+净产量
H+ net production
(kmol·hm-2·a-1)
H+产量
H+ production
(kmol·hm-2·a-1)
贡献率
Contribution
(%)
K Ca Mg
甘薯 Sweet potato 4.8 45.3 2.49 2.57 0.65 54.2 -0.439 10.1
玉米 Corn 12.2 78.3 1.54 1.13 0.66 21.4 -0.488 15.1
水稻 Rice 11.5 65.3 3.35 1.67 1.04 34.4 -1.096 16.5
花生 Peanut 14.6 78.3 1.15 1.93 0.92 21.4 -0.532 18.1
油菜 Rape 16.5 71.2 4.00 1.66 0.96 28.6 -0.795 22.4
大豆 Soybean 21.8 70.1 3.15 4.56 1.53 29.7 -1.147 30.0