ZHANG Xiao-ming,ZENG Xian-nan,SUN Yu.Effect of Soil Olsen-P on P Content in Soybean Plant and Soil N,P,K Content[J].Soybean Science,2016,35(04):691-695.[doi:10.11861/j.issn.1000-9841.2016.04.0691]
土壤有效磷含量对大豆植株磷素含量和土壤有效N、P、K 含量的影响
- Title:
- Effect of Soil Olsen-P on P Content in Soybean Plant and Soil N,P,K Content
- Keywords:
- Soil Olsen-P; NO -3 -N; Potassium; Plant phosphorus content
- 分类号:
- S565. 1
- 文献标志码:
- A
- 摘要:
- 土壤有效磷含量影响大豆植株对N、P、K 的吸收利用,进而影响大豆植株的生长发育和产量形成。以吉育89为材料,在大豆不同生长时期测定大豆植株磷素含量和土壤N、P、K 含量,研究其随土壤有效磷含量升高而发生变化的规律。结果表明: 在取样的4 个时期里,植株磷素含量均随土壤有效磷含量的升高呈单峰曲线变化,在土壤磷素水平为30 mg·kg - 1 时,植株磷素含量达到最大; 5 个处理的土壤速效磷含量变化趋势都是先下降,在收获期由于土壤自身的磷素补偿作用而有所升高; 在各生育时期的土壤中的硝态氮和速效钾含量最低值都出现在有效磷含量为30 mg·kg - 1 处理,而土壤速效磷含量为10 和50 mg·kg - 1 两个处理的硝态氮和速效钾含量一直较高,说明低磷和高磷土壤对植株氮素吸收有抑制作用。土壤有效钾含量的变化情况与硝态氮相似,均是随土壤有效磷含量升高而呈单峰曲线变化。说明N、P、K 肥的合理配比均能够提高肥料的作用效果。
- Abstract:
- The content of Olsen-P in soil affects nitrogen,phosphorus and potassium uptaken of the soybean plant,thus affectingthe formation of the growth and yield of soybean plant. This test measured the trends of plant phosphorus content and soilN,P,K content with rising soil Olsen-P content. Results showed that,in the 4 periods of sampling,the plant P content increasedwith increasing soil Olsen-P,showed a single peak curve,and the plant P content is maximum when Olsen-P levels insoil is 30 mg·kg - 1. Soil Olsen-P content in 5 treatments all declined firstly,and then increased in the harvest period,whichmaybe due to phosphorus compensation of soil itself. During the whole growth period,the lowest value of NO -3 -N and potassiumcontent in soil both appeared in the phosphorus content of 30 mg·kg - 1. In the two treatments of 10 and 50 mg·kg - 1 Olsen-P content,NO -3 -N and rapidly available potassium contents were always higher. This indicated that low and high phosphorussoil have inhibitory effect on nitrogen absorption of plant. The change of soil available K content was similar to NO -3 -N,bothshowed a single peak curve with increasing of Olsen-P content. Results shows that the effect of the N、P、K fertilizer has mutualinfluence, equilibrium fertilizer( N,P and K) can improve the effection on soybean.
参考文献/References:
[1] 姚玉波,吴冬婷,龚振平,等. 磷素水平对大豆氮素积累及产量的影响[J]. 核农学报,2012,26( 6) : 947-951. ( Yao Y B,Wu D T,Gong Z P,et al. Effect of phosphorus level on nitrogenaccumulation and yield in soybean[J]. Journal of Nuclear AgriculturalSciences,2012,26( 6) : 947-951. )
备注/Memo
基金项目: 公益性行业( 农业) 科研专项( 201303126) 。第一作者简介: 张小明( 1982-) ,女,硕士,实验师,主要从事作物栽培与育种研究。E-mail: xiaomingzhang1982@126. com。