CHEN Xi-feng,LI Yan,WANG Nan,et al.Effects of Potassium on Photosynthesis Rate and Yield in Soybean[J].HEILONGJIANG AGRICULTURAL SCIENCES,2010,(05):43-46.
钾对大豆光合速率和产量的影响
- Title:
- Effects of Potassium on Photosynthesis Rate and Yield in Soybean
- 文章编号:
- 1002-2767(2010)05-0043-04
- Keywords:
- soybean; photosynthesis rate; yield
- 分类号:
- S565.1
- 文献标志码:
- A
- 摘要:
- 在田间栽培的条件下,研究了不同施钾量对大豆光合作用和产量的影响。结果表明:施钾使大豆叶片的叶绿素含量、蒸腾速率和光合速率增加,同时也使叶面积指数、干物质积累量加大,株高、百粒重和产量提高,但过量的钾肥会使其降低。4个钾肥处理对光合特性及产量影响均存在着显著差异,施钾量 30 kg·hm-2处理的叶绿素含量、光合速率、蒸腾速率、干物质积累量、产量等指标均表现出明显优势。总的来看,施钾处理的各项指标值均高于对照。
- Abstract:
- In field culture of this experiment,the effects of potassium rate on photosynthesis rate and yield were studied with soybean. The results indicated that chlorophyll content, transpiration rate and photosynthesis rate of the soybean were growing higher with the increasing of potassium. At the same time, LAI, dry matter accumulation, plant high, 100-kernel wieght and yield of soybean were growing higher with the increasing of potassium too. But,excessive potassium fertilization,the trend was weaken. There were differences of photosynthesis rate and grain yield at the four potassium levels.The level of 30 kg·hm-2 treatment had apparent advantages in chlorophyll content, transpiration rate, photosynthesis rate, dry matter accumulation, yield, and so on. Generally speaking, those index value under potassium fertilization were higher than under no potassium fertilization.
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备注/Memo
第一作者简介:陈喜凤(1984-),男,吉林省公主岭市人,硕士,主要从事作物优质高产理论与技术研究。