摘要
植物蛋白是人类生存最基本的蛋白源,其生产力水平一定程度上制约着系统蛋白生产的规模。能量投入(尤其是化石能)是影响植物蛋白生产的重要因素。
Energy efficiency of vegetable protein production is studied for crops and crop systems inMiyun county in the suburb of Beijing.The results show that:1.The highest energyefficiency is obtained from growing peanut,which produces 787.5kg·ha(-1) of edible vegetableprotein and needs 1.01 J fossil energy and 1.25 J total energy input for producing 1J protein.For the crop system,it needs 1.87J inorganic energy and 7.98 J total energy input to produce1J protein.2.The output of protein is positively correlated with energy inputs,among which,fertilizer energy input is the most eminant.Increasing energy input is effective both in high,medium and low yield levels,but it is necessary to transfer more attention to medium andlow yield levels.
出处
《生态学杂志》
CAS
CSCD
北大核心
1990年第4期57-58,66,共3页
Chinese Journal of Ecology
关键词
农业生态系统
蛋白生产
能量效率
protein production
energy efficiency
a groecosystem
Miyun county
