With titanium-bearing blast furnace slag, ammonium sulfate, citric acid and potassium carbonate as raw materials to produce foliar fertilizer and Ca-S-Si compound fertilizer by means of heating process for the first t...With titanium-bearing blast furnace slag, ammonium sulfate, citric acid and potassium carbonate as raw materials to produce foliar fertilizer and Ca-S-Si compound fertilizer by means of heating process for the first time, which improved the solubility of the slag and converted the nutritional elements into such ones which are prone to be absorbed by plants. The effects of process conditions on dissolution rate of titanium were mainly analyzed through the orthogonal experiment. The results showed that the optimum synthesis process conditions of foliar fertilizer from the slag were 360 ℃ for 35 min, the mass ratio of ammonium sulfate and titanium-bearing blast furnace slag was 8：1. Under these conditions more than 80% of iron, titanium, magnesium and part of silicon in titanium-bearing blast furnace slag converted into water-soluble substances and existing in foliar fertilizer. Foliar fertilizer contained nitrogen, sulfur, potassium, iron, titanium, magnesium and silicon, and pH value of foliar fertilizer was 6. Ca-S-Si compound fertilizer mainly contained calcium silicate and calcium sulfate, which existed in the form of citric acid-soluble substance and slightly soluble substance, respectively.展开更多
为了研究叶面喷施螯合钙(EDTTi-Ca)对石榴(Punica granatum L.)果实品质和开裂的影响,从而提高石榴果实的品质。本研究在2019年和2020年对突尼斯软籽石榴叶面喷施不同浓度的EDTTi-Ca,分别为螯合钙1(EDTTi-Ca 1)(稀释1000倍)、螯合钙2(ED...为了研究叶面喷施螯合钙(EDTTi-Ca)对石榴(Punica granatum L.)果实品质和开裂的影响,从而提高石榴果实的品质。本研究在2019年和2020年对突尼斯软籽石榴叶面喷施不同浓度的EDTTi-Ca,分别为螯合钙1(EDTTi-Ca 1)(稀释1000倍)、螯合钙2(EDTTi-Ca 2)(稀释500倍),每季喷施两次,并测定石榴叶片中的常量和微量元素浓度、果实物理和化学特性。结果显示,与对照相比,叶面施用EDTTi-Ca 2仅在2019年显著提高了石榴叶片的钙(Ca)含量(1.95±0.12 vs 2.20±0.17,P<0.05),其原因可能是2019年施用的EDTTi-Ca 2已使叶片中Ca含量达到饱和状态。另外,叶片中氮(N)、磷(P)、钾(K)、铁(Fe)、锌(Zn)、锰(Mn)的含量则不受任何叶面Ca肥处理的影响(P>0.05)。在两个年份叶面施Ca对石榴果实单株产量、单株果实数和果重均无显著影响(P>0.05)。与对照相比,在两个年份叶面施用EDTTi-Ca 2均减少了果实裂果率(2019:5.67±0.74 vs 2.72±0.36,P<0.05;2020:6.75±0.88 vs 3.44±0.45,P<0.05),提高了果汁总可溶性固形物(total soluble solids,TSS)(2019:16.94±1.49 vs 17.91±1.57,P<0.05;2020:17.39±1.53 vs 18.32±1.61,P<0.05)。另外,与对照相比,叶面施用EDTTi-Ca 2在2019年份显著提高了果汁总可溶性固形物/可滴定酸(total soluble solids/titratable acids,TSS/TA)(8.96±0.76 vs 10.66±0.90,P<0.05),降低了果汁中总酚类化合物含量(429.18±23.93 vs 414.34±23.54,P<0.05)。然而,叶面施用EDTTi-Ca未影响两个年份的石榴果皮的厚度、果汁pH值、可滴定酸(titratable acids,TA)、总糖、抗氧化活性和总花青素(P>0.05)。本研究表明,叶片喷施合适剂量的EDTTi-Ca可提高了石榴叶片的Ca含量、减少了石榴果实裂果率、提高了石榴果汁TSS和TSS/TA、降低石榴果汁中总酚类化合物含量。展开更多
基金This study was supported by the National Natural Science Foundation of China （No. 50874029） and the National Basic Research Program of China （No.2007CB613504）. Thanks are due to X.L. Nan and B.Y. Ma for their assistance in language editing.
文摘With titanium-bearing blast furnace slag, ammonium sulfate, citric acid and potassium carbonate as raw materials to produce foliar fertilizer and Ca-S-Si compound fertilizer by means of heating process for the first time, which improved the solubility of the slag and converted the nutritional elements into such ones which are prone to be absorbed by plants. The effects of process conditions on dissolution rate of titanium were mainly analyzed through the orthogonal experiment. The results showed that the optimum synthesis process conditions of foliar fertilizer from the slag were 360 ℃ for 35 min, the mass ratio of ammonium sulfate and titanium-bearing blast furnace slag was 8：1. Under these conditions more than 80% of iron, titanium, magnesium and part of silicon in titanium-bearing blast furnace slag converted into water-soluble substances and existing in foliar fertilizer. Foliar fertilizer contained nitrogen, sulfur, potassium, iron, titanium, magnesium and silicon, and pH value of foliar fertilizer was 6. Ca-S-Si compound fertilizer mainly contained calcium silicate and calcium sulfate, which existed in the form of citric acid-soluble substance and slightly soluble substance, respectively.
文摘为了研究叶面喷施螯合钙(EDTTi-Ca)对石榴(Punica granatum L.)果实品质和开裂的影响,从而提高石榴果实的品质。本研究在2019年和2020年对突尼斯软籽石榴叶面喷施不同浓度的EDTTi-Ca,分别为螯合钙1(EDTTi-Ca 1)(稀释1000倍)、螯合钙2(EDTTi-Ca 2)(稀释500倍),每季喷施两次,并测定石榴叶片中的常量和微量元素浓度、果实物理和化学特性。结果显示,与对照相比,叶面施用EDTTi-Ca 2仅在2019年显著提高了石榴叶片的钙(Ca)含量(1.95±0.12 vs 2.20±0.17,P<0.05),其原因可能是2019年施用的EDTTi-Ca 2已使叶片中Ca含量达到饱和状态。另外,叶片中氮(N)、磷(P)、钾(K)、铁(Fe)、锌(Zn)、锰(Mn)的含量则不受任何叶面Ca肥处理的影响(P>0.05)。在两个年份叶面施Ca对石榴果实单株产量、单株果实数和果重均无显著影响(P>0.05)。与对照相比,在两个年份叶面施用EDTTi-Ca 2均减少了果实裂果率(2019:5.67±0.74 vs 2.72±0.36,P<0.05;2020:6.75±0.88 vs 3.44±0.45,P<0.05),提高了果汁总可溶性固形物(total soluble solids,TSS)(2019:16.94±1.49 vs 17.91±1.57,P<0.05;2020:17.39±1.53 vs 18.32±1.61,P<0.05)。另外,与对照相比,叶面施用EDTTi-Ca 2在2019年份显著提高了果汁总可溶性固形物/可滴定酸(total soluble solids/titratable acids,TSS/TA)(8.96±0.76 vs 10.66±0.90,P<0.05),降低了果汁中总酚类化合物含量(429.18±23.93 vs 414.34±23.54,P<0.05)。然而,叶面施用EDTTi-Ca未影响两个年份的石榴果皮的厚度、果汁pH值、可滴定酸(titratable acids,TA)、总糖、抗氧化活性和总花青素(P>0.05)。本研究表明,叶片喷施合适剂量的EDTTi-Ca可提高了石榴叶片的Ca含量、减少了石榴果实裂果率、提高了石榴果汁TSS和TSS/TA、降低石榴果汁中总酚类化合物含量。
