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生态学杂志 ›› 1992, Vol. ›› Issue (2): 57-60.

• 研究报告 • 上一篇    下一篇

三种优化组配产蛋饲粮的生态经济分析和产蛋模拟模型

李勇, 葛文华, 韩扬   

  1. 甘肃草原生态研究所, 兰州 730020
  • 收稿日期:1990-10-08 修回日期:1990-12-04 出版日期:1992-04-10

Ecolomic Analysis on Three Optimized Diet Combinations and Egg-Laying Simulation Models

Li Yong, Ge Wenhua, Han Yang   

  1. Gansu Grassland Ecological Institute, Lanzhou 730020
  • Received:1990-10-08 Revised:1990-12-04 Online:1992-04-10

关键词: 丽江云杉, 径向生长, 气候变化, 树轮年代学, 小中甸地区

Abstract: Indices of feed rewarding rate, output value rate, direct expense coefficient, conversion efficiency of feed energy to egg energy and ecolomic benefits are used to calculate and analyze the experimental results obtained under three optimized diet combinations. The function En=atbc-et is applied in simulating and modelling egg-laying patterns under different diet combinations. The results can be of guidance in egg-laying hens management and in prediction of egg productions.

Key words: Picea likiangensis, radial growth, climate change, dendrochronology; Small Zhongdian area