摘要
田间试验研究了3个水平的种植密度(21万株/hm2、24万株/hm2、27万株/hm2)对膜下滴灌棉花群体光合速率(CAP)、冠层结构及产量的影响。结果表明北疆棉区适宜播种条件下,24万株/hm2密度的群体冠层结构优于其他密度,生育后期仍可保持较高CAP,叶面积指数高值持续期进入早、持续时间长,光合物质累积多且分配到生殖器官中的比例大,皮棉产量较高。
The field experiments on the effects of 3 planting densities on the canopy apparent photosynthesis, canopy structure and yield of cotton drip-irrigated under the mulch were conducted in earlier harvest area of North Xinjiang. The results indicate that the optimum population density of the cotton is 240000 plantlets/hm^2 , under which the canopy structure, canopy apparent photosynthesis, leaf index, dry matter accumulation and distribution and lint yield of cotton are better than those under other densities.
出处
《中国生态农业学报》
CAS
CSCD
2006年第4期112-114,共3页
Chinese Journal of Eco-Agriculture
基金
国家"十五"重大科技攻关项目(2001BA507A-04-01)资助
关键词
棉花
膜下滴灌
种植密度
群体光合速率
冠层结构
Cotton, Drip-irrigated under the mulch, Planting density, Canopy apparent photosynthesis, Canopy structure
