作物收获指数的研究进展  

Review on Crop Harvest Index

作　　者：潘晓华[1] 邓强辉[1] 

机构地区：[1]江西农业大学农学院,江西南昌330045

出　　处：《江西农业大学学报》2007年第1期1-5,共5页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家科技部"国家粮食丰产科技工程"(2004BA520A04)

摘　　要：收获指数（HI）反映了作物群体光合同化物转化为经济产品的能力，是评价作物品种产量水平和栽培成效的重要指标。随着作物新品种的定向选育和栽培措施的不断改善，禾谷类作物的收获指数已由过去的0.3左右提高到现在的0．4～0．5，有的甚至达到了0．6。HI有着较高的遗传力，同时也受到环境条件的制约。作物光合特性、输导组织的结构、穗部性状、N素水平以及水分等都对HI有显著的影响。Harvest index is an important evaluation indicator on crop yield level and cultivation effect. With the improvement of cultivation practice and directional breeding of new crop varieties, the harvest index of cereal crops has enhanced universally to 0.4 ～ 0.5 from about 0.3, and even to 0.6. HI has higher hereditary capacity, but is influenced by agronomical practice. Some factors, such as crop photosynthetic character- istics, the structure of vascular bundle, ear characters, nitrogen level, moisture content, etc. , have great influence on it.

关 键 词：作物 收获指数 遗传特性 影响因素 

分 类 号：S501[农业科学—作物学]