大豆科学2011，Vol.30Issue(1)：73-78,6.
不同播期对春大豆生态性状的影响
Effect of Sowing Dates on Ecological Traits of Spring Soybean
摘要
Abstract
Ninteen spring soybean varieties spread from N 22.7°to N 50.2°were sowed on 4 dates in 2 years, respectively. The objective of present research is to study the effect of sowing dates on ecological traits of spring soybean. The results showed that plant heights and nods of main stem decreased as sowing date delayed and the degree of delayed amount increased gradually. Among all mature types, early-middle varieties showed the lowest plant height and nods of main stem. There were significant variations in aboveground biological weight, dry stem weight, pod shell weight, seed weight, among different maturity varieties. Effect of sowing date varied according to maturity types. Under delayed sowing date ( sowing at June 11 and July 1 ) the ratio of seed to aboveground biological weight ( economical coefficient ) increased for early and middle verieties early.Number of pod per plant, number of seed per unite area and 100-seed weight were increased for ueltra-early varieties.关键词
春大豆/播期/生态性状Key words
Spring soybean/ Sowing dates/ Ecological traits分类
农业科技引用本文复制引用
宁海龙,孙培乐,宋兆华,陈东升,孙学亮,赵丽丹,李文滨..不同播期对春大豆生态性状的影响[J].大豆科学,2011,30(1):73-78,6.基金项目
哈尔滨科技创新人才研究专项基金资助项目(2007RFQXNO14). （2007RFQXNO14）
