摘要
试验研究了不同钾水平下春大豆品种对钾利用效率和产量的差异。结果表明，不同钾水平间利用率（ＫＵＥ）和经济效率比（ＥＫＥＲ）均达极显著差异，不同春大豆品种间这些参数除了钾收获指数（ＫＨＩ）外也达极显著差异。施钾可显著地提高子粒产量，但品种间的反应不同。根据各春大豆品种对施钾的反应程度、钾利用效率的不同以及子粒产量的表现，可把春大豆品种分为若干反应型。本文也提出了以ＥＫＥＲ与子粒产量相结合作为钾高效筛选指标的观点。
Study on the difference in potassium using efficiency and seed yield of spring soybean cultivars to various potassium levels were conducted in this experiment.It was observed that signifieant difference of potassium using effiency (KUE), economical potassium efficience rate(EK ER) and potassium harvesting index (KHI) were at 0.01 level between various potassioum ap plying evels and was the same came case for different spring soybean cultivars except KHI.Seed yield was increased with the potassium fertilizer application but there were difference among spring soybean cultivars. There were two groups and four responsed types depended upon the difference of response of every spring soybean to potassium supply and of varions potassium use efficiency and seed yield.It was suggested that use EKER integration with seed yield can be used as an objective to select soybean genetype with high potassium using efficiency.
出处
《大豆科学》
CAS
CSCD
北大核心
1996年第3期202-207,共6页
Soybean Science
关键词
春大豆
钾肥
钾利用效率
产量
大豆
Spring soybean
K level
K use efficiency
Seed yield
