摘要
牧草的生长发育是受很多因素影响的,其中以气候条件和土壤条件为最大。为了更好地发展种草事业,我们就采用牧草生长指数对庆阳牧草生长生态条件作一简要分析。植物生长指数是1970年由Fitzpatrick和Nix两人在前人工作的基础上,又重新概念化并用于描述气候与植物生长关系的指数。
ABSTRACT The growth index is used to analyse the ecological conditions of forage growth in Qingyang.The growth index is the product of a temperature index, soil moisture index and a light index, ie GI= TI ×SI×Ll. The results show as fallow: 1. Temperature is the most important limiting factor for forage growth in Qingyang from the begining of January to March and October to December. 2. Soil moisture is the most important limiting factor from April to August. 3. Light is the most important limiting factor in September.
出处
《草业科学》
CAS
CSCD
北大核心
1989年第3期14-16,共3页
Pratacultural Science
