Ana Paula Pereira Nunes, Thalita Takayama, Leonardo Fernandes Sarkis, Douglas Guelfi
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引用次数: 0
摘要
农业土壤中微量元素均匀分布和磷利用效率的挑战是普遍存在的。微量元素可以作为包膜磷肥添加,为作物创造多养分肥料来解决这一问题。本研究的目的是量化P、B、Cu、Mn和Zn在包覆磷肥中的扩散和有效性。另一个目的是评估大豆的养分吸收、分配和产量。处理为磷酸一铵和NPS(氮、磷、硫)肥,涂有Maxxi‐Phós和Wolftrax、Microsol或MIB Precise。B和Cu的施用浓度在0.15% ~ 0.05%之间。Mn、Zn含量在0.45% ~ 0.15%之间。在温室试验和田间试验中对养分积累和恢复进行了评价。P在336 h内的扩散范围为5.58 ~ 18.88 mm。微量元素利用效率随大豆(甘氨酸max)物候阶段的不同而变化,以V4期为重点,分别为B(0.65% ~ 13.89%)、Cu(6.73% ~ 62.84%)、Mn(0.73% ~ 3.36%)和Zn(0.01% ~ 2.34%)。养分输出量为:55.7 kg p2o - 5 ha - 1、209.6 g B - 1、109 g Mn - 1、216.7 g Zn - 1和64.3 g Cu - 1。田间试验中,b1 ~ r5.1阶段对B、Mn、Zn的吸收显著(p≤0.05),而Cu的吸收则在V4 ~ R1阶段。微量元素包覆磷肥作为大豆多养分肥料,可以替代出口养分。
Micronutrients in coated phosphate fertilizer improve precision distribution and nutrient use efficiency of soybean
Abstract Challenges regarding uniform micronutrient distribution and P‐use efficiency in agricultural soils are common. Micronutrients can be added as coated P fertilizers, creating multi‐nutrient fertilizers for crops to address this issue. The objective of this study was to quantify the diffusion and availability of P, B, Cu, Mn, and Zn in coated P fertilizers. Another objective was to evaluate the nutrient uptake, partitioning, and yield of soybeans. Treatments were monoammonium phosphate and NPS (nitrogen, phosphorus, sulfur) fertilizer coated with Maxxi‐Phós and either Wolftrax, Microsol, or MIB Precise. Applied concentrations of B and Cu varied between 0.15% and 0.05%. The Mn and Zn ranged from 0.45% to 0.15%. Nutrient accumulation and recovery were assessed in the greenhouse and field trials. P diffusion ranged from 5.58 to 18.88 mm in 336 h. Micronutrient use efficiencies varied according to the soybean ( Glycine max ) phenological stages, with emphasis on the V4 stage, which resulted in the following values: B (0.65% to 13.89%), Cu (6.73% to 62.84%), Mn (0.73% to 3.36%), and Zn (0.01% to 2.34%). Nutrient exports were: 55.7 kg of P 2 O 5 ha −1 , 209.6 g of B ha −1 , 109 g of Mn ha −1 , 216.7 g of Zn ha −1 , and 64.3 g of Cu ha −1 . There was significant absorption ( p ≤ 0.05) of B, Mn, and Zn at stages R1–R5.1 in the field trial, whereas it was from V4 to R1 for Cu. As a multi‐nutrient fertilizer for soybeans, micronutrient‐coated P fertilizers could replace exported nutrients.
期刊介绍:
SSSA Journal publishes content on soil physics; hydrology; soil chemistry; soil biology; soil biochemistry; soil fertility; plant nutrition; pedology; soil and water conservation and management; forest, range, and wildland soils; soil and plant analysis; soil mineralogy, wetland soils. The audience is researchers, students, soil scientists, hydrologists, pedologist, geologists, agronomists, arborists, ecologists, engineers, certified practitioners, soil microbiologists, and environmentalists.
The journal publishes original research, issue papers, reviews, notes, comments and letters to the editor, and book reviews. Invitational papers may be published in the journal if accepted by the editorial board.