GUO Xuan,GONG Zhen-ping,MA Chun-mei,et al.Phosphorus Uptake and Accumulation in Soybeans with Different Maturity[J].Soybean Science,2013,32(03):376-380.[doi:10.11861/j.issn.1000-9841.2013.03.0376]
不同熟期大豆磷素吸收积累规律的研究
- Title:
- Phosphorus Uptake and Accumulation in Soybeans with Different Maturity
- Keywords:
- Soybean; Phosphorus; Accumulation
- 分类号:
- S565.1
- 文献标志码:
- A
- 摘要:
- 为合理施用磷肥，以不同熟期大豆品种黑河43、绥农28和黑农51为试验材料，在低磷（10 mg·kg-1）和高磷（33 mg·kg-1）两种磷水平土壤下，对大豆不同生育时期不同器官的磷素含量动态变化、磷素吸收积累与分配以及产量因素进行研究。结果表明：（1）3个供试大豆品种在低磷水平下，各营养器官中的磷素含量均呈单峰曲线变化（黑河43叶柄磷素含量除外），荚果的磷素含量自R5期呈上升趋势；在高磷水平下，绥农28叶片中磷素含量随生育时期推进呈下降趋势，但黑河43、黑农51叶片中的磷素含量呈单峰曲线变化，黑河43、绥农28荚果中磷素含量自R5期呈上升趋势，而黑农51荚果磷素含量呈下降趋势；（2）高磷处理下植株干物质与磷素积累量均较低磷处理增多；（3）从V3至R5期，植株各器官磷素分配顺序为叶片>荚果>根>茎>叶柄，在R8期营养器官磷素的分配率明显低于荚果；（4）在高磷处理下，黑河43、绥农28和黑农51的产量分别较低磷处理增加2.1%、9.5%和7.2%。因此，较高的土壤磷素水平对中晚熟大豆品种的增产效果明显优于早熟品种。
- Abstract:
- Three soybean cultivars with different maturity,Heihe 43(early mature),Suinong 28(middle mature)and Heinong 51(late mature),were pot planted under phosphorus levels of 10 mg·kg-1(P10)and 33 mg·kg-1(P33).The dynamics,absorption and allocation of phosphorus in different organs as well as soybean yield components were determined to apply P fertilizer reasonably.Under P10 level,except that in petioles of Heihe 43,P content in each organ of three cultivars all presented a single-peak curve.Under P33 level,with the process of growth period,P content in leaves of Suinong 28 decreased,while that in Heihe 43 and Heinong 51 showed a single-peak curve;P content in pods of Heihe 43 and Suinong 28 increased since R5,while that in Heinong 51decreased.Plant dry matter and P accumulation in P33 both higher than P10.From V3 to R5,the P allocation in descending order were leaf,pod,root,stem and petiole.More P partitioned into pods at R8.Seed yield of Heihe 43,Suinong 28 and Heinong 51 under P33 increased by 2.1%,9.5% and 7.2%,respectively, compared to P10.Results suggest the yield-increasing effect of higher soil P content to mid-late mature soybeans is superior to that of early mature ones.
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