The output and input ratios of artificial supplementary energy in plantation, poultry and stock-raising are higher than that in fishery.
第二性生产的绝大部分人工辅助能依靠系统外输入。
The results showed that (1) supplementary energy input, energy transformation efficiency and output energy of farming sub-system were still in low level .
结果表明：（1）种植业亚系统的人工辅助能投入和能量的产出都在逐年迅速增加，但能量的投入和产出均处于较低水平，能量利用效率低。
The results showed that (1) supplementary energy input, energy transformation efficiency and output energy of farming sub-system were still in low level .
结果表明：（1）种植业亚系统的人工辅助能投入和能量的产出都在逐年迅速增加，但能量的投入和产出均处于较低水平，能量利用效率低。
应用推荐