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李志豪,胡月明,杨颢,等.基于高分遥感和随机森林算法的澄迈县热带土壤肥力综合评价[J].农业资源与环境学报,2026,43(5):1147-1154. Li Z H, Hu Y M, Yang H, et al. Comprehensive evaluation of tropical soil fertility in Chengmai County based on high resolut
牛鑫泽,卢姜蒙,李萍,等. 江汉平原稻虾共作下土壤还原性物质的累积过程与时空动态[J]. 农业资源与环境学报, 2026, 43(5): 1155-1163. Niu X Z, Lu J M, Li P, et al. Accumulation and spatiotemporal dynamics of soil reductive substances under rice–crayfish
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卢小倩,付超,陈金露,等.氮肥减量配施腐植酸对北疆灌区土壤有机碳组分、酶活性及玉米产量的影响[J].农业资源与环境学报,2026,43(5):1189-1199. Lu X Q, Fu C, Chen J L, et al. Effects of nitrogen fertilizer reduction with humic acid application on soil organic c
肖辉,张瑜煊,张非凡,等. 沼渣替代化肥对小白菜产量及 N2O 产生过程的影响机制[J]. 农业资源与环境学报, 2026, 43(5): 1200-1207. Xiao H, Zhang Y X, Zhang F F, et al. Effects of replacing chemical fertilizer with biogas residue on Pakchoi yield and
摘 要:为探究钾肥对库尔勒香梨树体枝条矿质元素含量及产量的影响,提出最佳钾肥施用量,本研究以7~8年生库尔勒香梨树为试验用材,滴灌条件下设置对照施肥处理K0(0 kg·hm -2)以及三个钾肥浓度处理K75、K150、K225(分别为75、150、225 kg·hm -2),探究不同钾肥施用量与库尔勒香梨树体枝条矿质元素含量和香梨产量之间的相关性。结果表明:适量施用钾肥能够显著提高香梨树体枝条的矿质元素含量并且提高香梨产量,而过量施钾会导致香梨树体枝条矿质元素含量出现下降甚至被抑制。与不施钾肥K0处理相比,K75处理K元素的促进作用主要体现在新生梢条,对枝条Ca、Mg元素含量有显著促进作用,对枝条中其余矿质元素无显著影响,单果质量在该处理下显著增加4.67%,但单株果数与产量无显著变化;K150处理对香梨树体枝条N、P、K、Fe、Mn、Cu元素有显著促进作用,单果质量、单株果数、产量在该处理下较K0处理显著增加18.19%、24.81%、47.36%;K225处理对香梨树体枝条的N、P、K元素有显著促进作用,对枝条中、微量元素无显著影响,单果质量、产量在该处理下较K0处理显著增加10.98%、28.93%。钾肥处理与枝条N、P、K、Fe、Mn、Cu、Zn元素呈正相关关系,与Ca、Mg元素呈负相关关系,成熟期枝条N、P、K、Mn、Zn元素与香梨产量表现出显著或极显著正相关关系,钾肥处理与香梨产量之间呈显著正相关关系。因此本研究推荐7~8年树龄的库尔勒香梨树施用钾肥150 kg·hm -2,能够显著提升树体枝条的矿质元素含量,在增强树体健康与活力的同时,实现香梨的增产增效。
鲁娜娜,王玲,汪时磊,等.赖氨酸叶面肥施用对小麦产量和品质的影响[J].农业资源与环境学报,2026,43(5):1219-1229. Lu N N, Wang L, Wang S L, et al. Effects of foliar fertilizer application of lysine on wheat yield and quality [J]. Journal of Agri
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时妍,刘峥宇,李艳,等.秸秆深耕还田对白浆土铁氧化物形态与有机碳累积的影响[J].农业资源与环境学报,2026,43(5):1241-1248. Shi Y, Liu Z Y, Li Y, et al. Effects of deep tillage with straw returning on iron oxide forms and soil organic carbon accumula
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摘 要:本研究以滇西片区健康和患病乌头为研究对象,采用高通量测序技术对其根际与根系细菌和真菌群落结构组成差异及与环境因素之间的关系进行分析。结果表明:细菌和真菌群落组成与多样性在根际土、须根、表皮和块根4个部位存在显著差异,乌头患病后表皮和块根部位细菌多样性降低,须根和块根部位真菌多样性升高;须根和块根部位芽孢杆菌属(Bacillus)细菌和陶氏菌属(Tausonia)真菌的相对丰度显著降低,欧文氏菌属(Erwinia)细菌和镰孢菌属(Fusarium)真菌的相对丰度显著增加。冗余分析结果表明,土壤pH、全氮、全钾和硝态氮是影响乌头根际细菌和真菌群落组成的主要因素。属水平丰度排名前30的热图分析显示,芽孢杆菌属与土壤全钾呈显著正相关,而镰孢菌属与土壤速效磷和速效钾呈显著负相关。综上所述,欧文氏菌和镰孢菌在乌头须根和块根部位的富集是根腐病的关键致病因子,合理提升土壤速效磷、速效钾含量有助于芽孢杆菌等有益菌的富集,可为乌头根腐病防治提供科学依据。
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