| 摘要: |
| 一个特定的农田生态系统有其一定的能量转换与物质循环的特点与效率。从宏观上对这方面的问题进行研究将有助于从一个侧面探讨农业战略上的一些重大问题。例如,我国农业走什么路子,是有机农业还是无机农业?是强调还是不强调能量的投入?重点将能量投放到高产地区还是低产地区?是重中原还是重边疆?等等。对于这些问题,认识上是有分歧的。为了探讨上述问题并为制定我国农业发展战略服务,我们在近年内先后实地考察了代表 |
| 关键词: 有机肥料 投入量 重大问题 能量转换效率 有机农业 无机农业 产投比 六安地区 不同地区 农田生态系统 |
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| Abstract: |
| After having made some on-the-spot investigations in 14 regions, representing different levels of development of agriculture from north China to south China,an effort is made to study the efficiency of ener- gy input.The results of the study are as follows: 1.The organic energy input,such as labor,animal power and organic fertilizer,constitutes the major part of the total energy in- put in Chinese agro-ecosystems.The way,characterized by high input of petroleum energy in west countries cannot be adapted as ... |
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