入侵一个地区的物种会危害生态系统、农业和人类健康。
Species that invade a territory can harm ecosystems, agriculture and human health.
真正生态农业的费用将会非常小。
The real cost of an ecological agriculture will be much less.
生态农业是绿色的，但是它的性质是一项产业。
Ecological agriculture is green, but it is still essentially an industry.
而生态农业的基本特点是高度依赖于信息技术和密集型管理。
Its basic characteristics are high dependence on IT and dense management.
不错，生态农业在中国仍然处于实验性的阶段。
It's true that ecological agriculture is still in the experimental phase in China.
世界粮食生产的不平衡是农业生态系统及其管理部门的一个问题。
The world food imbalance is a problem of agricultural ecosystems and their management.
所以，建立农业生态环境评价的专家系统是很必要的。
So it is necessary to set up an expert system on evaluation of agric-ecological environment.
生态农业的关键，不是技术上的，而是组织上的。
The crucial point of ecological agriculture is not technology but organization.
北美与西欧的农业生态系统差别太大难于比较。
The North American and Western European agroecosystems are too different to compare.
北美与西欧的农业生态系统差别太大难于比较。
The North American and Western European agroecosystems are too different to compare.
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