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抗虫杂交棉豫杂35适宜密度与行距配置研究 被引量:7

Studies on Suitable Densities and Configurations of Insect-resistant Bt Transgenic Hybrid Cotton Yuza 35
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摘要 在河南省高产栽培条件下,研究了抗虫杂交棉豫杂35的适宜密度和行距配置。结果表明,在保留2~3个强势叶枝时,豫杂35以种植2.25万株/hm^2配合行距1.20m较为适宜,分别比1.50万株/hm^2配合行距1.20m、2.25万株/hm^2配合行距1.00m,1.50万株/hm^2配合行距1.00m、3.00万株/hm^2配合行距1.20m、3.00万株/hm^2配合行距1.00m的处理增产皮棉3.31%,4.42%,5.41%,8.63%,16.38%。增产的主要原因是棉花叶面积系数(LAI)适中,冠层光分布合理,干物质分配到生殖器官的比例较大,单位面积的总成铃数较高。 Suitable densities and configurations of insect-resistant Bt transgenic hybrid cotton Yuza 35 was studied under high yield cultivation conditions in Henan province. Results showed that,in the cases of 2-3 predominant monopodium per plant was retained, population of 2.25 × 10^4 plant per ha with 1.20 m-wide rows was suitable for Yuza 35 and 3.31% ,4.42% ,5. 41% ,8.63% ,16.38% more lint yield was harvested comparing with 1.50 ×10^4 plant per ha with 1.20m-wide rows,2. 25 × 10^4 plant per ha with 1.00 m-wide rows,1.50×10^4 plant per ha with 1.00m-wide rows,3.00 × 10^4 plant per ha with 1.20 m-wide rows, 3.00 × 10^4 plant per ha with 1.00 m-wide rows respectively. Cotton population of 2.25 × 10^4 plant per ha with 1.20m-wide rows also showed appropriate LAI and light distribution in canopy, more dry matter distributed to reproductive organs and more bolls retained.
出处 《河南农业科学》 CSCD 北大核心 2008年第12期41-44,共4页 Journal of Henan Agricultural Sciences
基金 河南省科技攻关项目(0624100018) 河南省杰出人才创新基金(0321001600)
关键词 抗虫杂交棉 豫杂35 密度 配置 产量 Insect-resistant Bt transgenic hybrid cotton Yuza35 Density Configuration Yield
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