玉米高产潜力开发技术研究  

Study on High Yield Potential Developing of Maize

作　　者：张永科[1] 孙茂 张雪君 何仲阳 马永平[1] 

机构地区：[1]西北农林科技大学农学院,陕西杨凌712100 [2]河北隆化三北种业育种中心,河北隆化068150

出　　处：《玉米科学》2004年第3期76-79,共4页Journal of Maize Sciences

基　　金：陕西省农发办重点推广项目资助

摘　　要：用直立叶型玉米杂交种作试材,就高密度下不同株行距处理的玉米杂交种产量进行了研究比较。结果表明在7.5万株/hm2、9.0万株/hm2下50cm等行距条播较67cm等行距条播增产显著。选用直立叶型强优势玉米杂交种,采用50cm等行距条播,增大密度至7.5万～9.0万株/hm2,进行无水分和土壤营养胁迫下的规范化栽培,构成高光效玉米群体冠层光合系统技术体系,在当代玉米高产开发中具有显著增产效果和农业生态经济意义。Take the leaf straight-up type maize hybrids as the experimental material, the yield of hybrids under high density different plant-line distance conducted has been studied in this paper .The result indicated: the yield of 50 cm line distance line sowing evenly is higher than that of 67cm line distance line sowing evenly under 75 000 plants/ha?90 000 plants/ha significantly. Using the leaf straight-up type maize hybrids and 50 cm line distance line sowing evenly ,make the maize mass density up to 75 000 ～ 90 000 plants/ha, standardization cultivating under stress of no soil water and nutrition ,these compose the technology system of set up the photosynthesis system of high photosynthetic efficiency maize mass canopy. It possess important effect of increase maize yield and agricultural ecological economical effects in modern maize high yield developing.

关 键 词：玉米 高产潜力 开发技术 

分 类 号：S513.048[农业科学—作物学]