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[1]栗丽,李廷亮,孟会生,等.溶磷菌剂对施磷复垦土壤无机磷形态及油菜磷吸收的影响[J].应用与环境生物学报,2020,26(03):612-618.[doi:10.19675/j.cnki.1006-687x.2019.08036]
 LI li,LI Tingliang,et al.Effects of a phosphorus-dissolving agent on the phosphorus absorption of rape and inorganic phosphorus fractions in reclaimed soil supplemented with phosphorus fertilizers[J].Chinese Journal of Applied & Environmental Biology,2020,26(03):612-618.[doi:10.19675/j.cnki.1006-687x.2019.08036]
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溶磷菌剂对施磷复垦土壤无机磷形态及油菜磷吸收的影响
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
26卷
期数:
2020年03期
页码:
612-618
栏目:
研究论文
出版日期:
2020-06-25

文章信息/Info

Title:
Effects of a phosphorus-dissolving agent on the phosphorus absorption of rape and inorganic phosphorus fractions in reclaimed soil supplemented with phosphorus fertilizers
作者:
栗丽李廷亮孟会生洪坚平谢英荷
1山西农业大学资源环境学院 太谷 030801 2山西农业大学资源环境国家级实验教学中心 太谷 030801
Author(s):
LI li1 2 LI Tingliang1 2 MENG Huisheng1 2 HONG Jianping1 2 & XIE Yinghe1 2?
1 College of Resources and Environment, Shanxi Agricultural University, Taigu 030801, China 2 National Experimental Teaching Demonstration Center for Agricultural Resources and Environment, Shanxi Agricultural University, Taigu 030801, China
关键词:
溶磷菌剂复垦土壤无机磷形态有效磷磷素吸收
Keywords:
phosphorus solubilizing agent reclaimed soil inorganic phosphorus form available phosphorus phosphorus absorption
DOI:
10.19675/j.cnki.1006-687x.2019.08036
摘要:
磷的有效化是限制复垦土壤肥力提升的主要因素,溶磷菌能够活化土壤中的难溶态的磷,增强土壤磷的供给能力,研究其对复垦土壤无机磷形态及生物有效性的影响,可为矿区复垦土壤熟化和肥力提升提供科学依据. 通过盆栽试验,研究混合溶磷菌剂对施用磷矿粉和磷酸钙的复垦土壤中有效磷含量、磷酸酶活性、无机磷形态及其转化以及盆栽油菜磷素吸收的影响. 结果显示:与未接种溶磷菌剂的处理相比,接种溶磷菌剂后复垦土壤中有效磷含量和磷酸酶活性分别提高了61.44%-65.77%和95.49%-104.75%(P < 0.05);土壤油菜鲜重和吸磷量分别增加了28.07%-33.89%和25.53%-33.33%(P < 0.05). 等磷量施用磷酸钙和磷矿粉,复垦土壤中的无机磷均以Ca10-P为主要形态. 在施用磷矿粉的土壤中接种溶磷菌剂能够显著降低Ca10-P含量和转化率,提高Ca8-P含量和转化率,促进Ca10-P向Ca8-P转化;在施用磷酸钙的土壤中接种溶磷菌剂能够促进Ca10-P向Ca2-P、Ca8-P转化,O-P向Al-P转化. 土壤有效磷和磷酸酶以及油菜吸磷量的增加与Ca10-P的减少以及Ca2-P、Ca8-P、Al-P和Fe-P的增加有关. 本研究表明溶磷菌剂能够促进磷矿粉和磷酸钙在复垦土壤中由Ca10-P向Ca2-P和Ca8-P转化,提高土壤磷的生物有效性;另外,在施用磷酸钙的土壤中,溶磷菌剂的溶磷能力和对油菜的促生效果优于施用磷矿粉的土壤. (图1 表6 参35)
Abstract:
The availability of phosphorus is one of the main limiting factors in improving reclaimed soil fertility. Phosphate-dissolving bacteria can activate recalcitrant phosphorus and enhance the available phosphorus supply in soil. Investigation into the effects of phosphate-dissolving bacteria on inorganic phosphorus fractions and bioavailability in reclaimed soil could provide a scientific basis for soil maturation and fertility improvement of reclaimed soil in mining areas. A pot experiment was conducted to study the effects of phosphate-dissolving bacteria on available phosphorus content, phosphatase activity, inorganic phosphorus fractions, and its transformation in reclaimed soil, as well as the phosphorus absorption of potted rape. Phosphate rock powder and tricalcium phosphate were used as exogenous phosphorus and added at the rate of 0.23 g P kg-1 soil, with the phosphorus-dissolving agent applied at a rate of 1.0 g kg-1 soil. The results showed that inoculation with phosphate-dissolving bacteria significantly increased the available phosphorus content, enzyme activity, and phosphorus uptake by rape (P < 0.05). Inoculation with a phosphorus-solubilizing agent resulted in an increase in available phosphorus content, phosphatase activity, rape fresh weight, and phosphorus uptake in the combined treatments by 61.44%-65.77%, 95.49%-104.75%, 28.07%-33.89%, and 25.53%-33.33%, respectively. Under the same phosphorus application amount, Ca10-P was the main inorganic phosphorus soil fraction in all treatments. Inoculating reclaimed soil supplemented with phosphate rock powder with a phosphate-dissolving agent significantly reduced the amount and conversion rate of Ca10-P, while increasing that of Ca8-P (P < 0.05). This indicates that phosphate-solubilizing agents promote the transformation of Ca10-P to Ca8-P. The combination of phosphate-solubilizing agent and tricalcium phosphate may promote the transformation of Ca10-P to Ca8-P and Ca2-P, as well as O-P to Al-P. Available soil phosphorus, phosphatase activity, and phosphorus absorption of rape were negatively correlated with Ca10-P, and positively correlated with Ca2-P, Ca8-P, Fe-P, and Al-P (P < 0.05). This indicates that the increase of available phosphorus and phosphatase in the soil, as well as the phosphorus absorption in rape is related to the decrease of Ca10-P and the increase of Ca2-P, Ca8-P, Al-P, and Fe-P. Our results suggest that phosphorus-dissolving bacteria could promote the transformation of inorganic phosphorus from Ca10-P to Ca2-P and Ca8-P, as well as O-P to Al-P in reclaimed soil. This would therefore increase the content of available phosphorus in soil and improve bioavailability of phosphorus for rape. In addition, phosphorus-dissolving bacteria had a greater effect on rape growth and dissolving phosphorus in soil supplemented with tricalcium phosphate, compared to soil supplemented with phosphate rock powder.

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更新日期/Last Update: 2020-06-25