干旱区生态环境知识资源中心(Arid): 不同聚合度和聚合率的聚磷酸磷肥对石灰性土壤磷与微量元素有效性的影响

Arid

	不同聚合度和聚合率的聚磷酸磷肥对石灰性土壤磷与微量元素有效性的影响
其他题名	Polymerization degree and rate of polyphosphate fertilizer affected the availability of phosphorus, Fe, Mn and Zn in calcareous soil
	高艳菊; 亢龙飞; 褚贵新
来源期刊	植物营养与肥料学报
ISSN	1008-505X
出版年	2018
卷号	24 期号:5 页码:1294-1302
中文摘要	【目的】聚合度和聚合率是影响聚合态磷肥肥效的关键指标,本研究旨在明确聚合度和聚合率对聚磷酸盐在土壤中的转化、土壤磷有效性及磷肥肥效的影响。【方法】以灌耕灰漠土为供试土壤,玉米为供试作物进行了盆栽试验。试验共设5个处理:不施磷肥(CK);磷酸二氢铵(MAP);聚合度和聚合率不同的3种聚磷酸铵磷肥平均聚合度3,聚合率40%(APP-3-40%);平均聚合度3,聚合率90%(APP-3-90%);平均聚合度2.7,聚合率90%(APP-2.7-90%)。除对照不施磷肥外,每钵(7kg土)施N 2.4 g、P_2O_5 1.1 g、K2O 0.7 g。于播种后第10、 20、30、40、50、60、70、80、90 d采集土样,测定土壤水溶性磷和Olsen-P。并于第90 d测定土壤全磷,土壤有效态Fe、Mn、Zn含量和磷分级(Guppy法)。分别于播种后第45和90 d取玉米植株样品,测定玉米干物质,含磷量与微量元素Fe、Mn与Zn含量。【结果】与MAP处理相比,不同聚合度与聚合率的聚磷酸磷肥处理均可显著提高土壤有效磷含量。聚合度均为3时,APP-3-90%处理土壤水溶性磷与有效磷比APP-3-40%分别提高了15.7%与7.9%,土壤Resin-P与NaHCO_3-P分别提高了38.0%与22.8%,HCl-P则降低了6.2%。聚合率均为90%时,APP-3-90%处理的土壤有效磷比APP-2.7-90%提高了5.0%,Resin-P与NaHCO_3-P分别提高了75.1%与34.2%,HCl-P降低了12.0%,APP-3-90%的玉米干物质与吸磷量比APP-2.7-90%处理的分别提高了14.3%与4.5%,聚合度相同的APP-3-90%与APP-3-40%处理间差异不显著。聚磷酸磷肥可显著提高土壤微量元素(Fe、Mn、Zn)的有效性。在相同聚合率(90%)下,APP-3-90%处理的土壤有效Fe、Mn和Zn含量比APP- 2.7-90%分别提高了5.7%、8.4%与29.9%。在相同聚合度(n= 3)下,APP-3-90%处理的土壤有效Fe和Zn含量比APP-3-40%分别提高了3.0%和29.0%。在相同聚合率(90%)下,APP-3-90%处理玉米的Fe和Zn吸收量比APP-2.7-90%分别提高了5.7%和19.5%,不同聚合率处理间差异不显著。【结论】聚磷酸磷肥可显著提高石灰性土壤磷及Fe、Mn和Zn的有效性,减少土壤对磷的固定;聚合度对土壤磷有效性与微量元素的活化作用显著大于聚合率。
英文摘要	【Objectives】 Polymerization degree and polymerization rate of polyphosphate fertilizer are critical parameters affecting the availability of phosphorus in soil. The paper studied the effects of polymerization degree and rate of polyphosphate fertilizer on phosphorus availability. 【Methods】 A pot experiment was carried out using cultivated gray desert soil (Calcaric fluvisals) and maize as test material. At the equal nutrient supply (N 2.4 g/pot,P_2O_5 1.1 g/pot,K2O 0.7 g/pot), five phosphorous fertilizer treatments were setup, ie: no P application (CK), mono-ammonium phosphate (MAP), polyphosphate with polymerization degree and rate of 3, 90% (APP/90%); 2.7, 90% (APP-2.7-90%) and 3, 40% (APP-3-40%). The soil weight in each pot was 7.0 kg. The soils were sampled every ten days after sowing for measurement of the water soluble-P and Olsen-P contents. The contents of total-P, micronutrients (Fe, Mn and Zn) and phosphorus fractionation (Guppy method) on the 90th day soil samples were determined. The mazes were harvested after sowing 45 and 90 d for the determination of dry weight, the P, Fe, Mn and Zn contents. 【Results】 Compared with the MAP, all the three polyphosphate treatments significantly increased the soil available P contents. At the polymerization degrees of 3, the watersoluble P and available P contents in APP-3-90% treatment were 15.7% and 7.9% higher than those in the APP-3- 40%, and the soil Resin-P and NaHCO_3-P were increased by 38.0% and by 22.8% relative to the APP-3-40% treatment, respectively, while soil HCl-P decreased by 6.2%. At the same polymerization rate of 90%, the soil available P, Resin-P and NaHCO_3-P in the APP-3-90% treatment were 5.0%, 75.1% and 34.2% higher than those in the APP-2.7-90% treatment, respectively, but soil HCl-P content was 12.0% lower. At the same polymerization rate of 90%, maize dry weight and P uptake in the APP-3-90% were 14.3% and 4.5% higher than those in the APP-2.7-90%, respectively. All polyphosphate treatments significantly increased the contents of available Fe, Mn and Zn in soils regardless of polymerization degree or polymerization rate. In the 90% polymerization rate, the soil available Fe, Mn and Zn in the APP-3-90% were 5.7%, 8.4% and 29.9% higher than those in the APP-2.7- 90%, respectively. Similarly, in the polymerization degree of 3, the contents of soil available Fe and Zn in APP1 were increased by 3.0% and 29.0% relative to those in the APP-3-40%, the uptakes of Fe and Zn by maize in the APP-3-40% were 5.7% and 19.5% higher than those in the APP-2.7-90%, but no significant differences between APP-3-90% and APP-3-40%. 【Conclusions】 Compared with regular ortho-phosphate fertilizer, polyphosphate fertilizers significantly improved the availability of P and Fe, Mn, Zn in soils, thereby reducing fixation of P in calcareous soil. Specially, polymerization degree of polyphosphate fertilizer demonstrates more important role in increasing soil P and Fe, Mn and Zn availability than polymerization rate.
中文关键词	聚磷酸铵 ; 聚合度 ; 聚合率 ; 石灰性土壤 ; 有效磷 ; 微量元素 ; 玉米
英文关键词	ammonium polyphosphate polymerization degree polymerization rate calcareous soil available phosphorus microelement maize
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6344036
来源机构	石河子大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238649
作者单位	石河子大学农学院, 新疆生产建设兵团绿洲生态农业重点实验室, 石河子, 新疆 832003, 中国
推荐引用方式 GB/T 7714	高艳菊,亢龙飞,褚贵新. 不同聚合度和聚合率的聚磷酸磷肥对石灰性土壤磷与微量元素有效性的影响[J]. 石河子大学,2018,24(5):1294-1302.
APA	高艳菊,亢龙飞,&褚贵新.(2018).不同聚合度和聚合率的聚磷酸磷肥对石灰性土壤磷与微量元素有效性的影响.植物营养与肥料学报,24(5),1294-1302.
MLA	高艳菊,et al."不同聚合度和聚合率的聚磷酸磷肥对石灰性土壤磷与微量元素有效性的影响".植物营养与肥料学报 24.5(2018):1294-1302.