有机物料对酸化山核桃林地土壤的改良作用

发布时间：2018-05-14 14:06

本文选题：森林土壤学 + 山核桃　；参考：《浙江农林大学学报》2017年04期

【摘要】：为探讨有机物料对山核桃Carya cathayensis林地酸性土壤的改良效果,通过室内培养的方式,研究不同添加剂量下,沼渣、肥得力、黄腐酸钾、竹炭等对山核桃林地酸性土壤性质的影响;通过大田试验,研究竹炭、肥得力、黄腐酸钾等对山核桃林生长及产量的影响。结果表明:有机物料能显著降低土壤酸度,提高土壤pH值(P0.05),经过培养后土壤pH值由pH 4.41升至pH 5.17,上升了17.00%;有效地降低了土壤交换性酸与交换性铝,增加土壤交换性盐基,其中交换性铝由3.94 cmol·kg~(-1)降至0.72 cmol·kg~(-1),降幅高达81.70%。有机物料也增加了土壤有机质、有效磷、速效钾和碱解氮质量分数,其中有机质和碱解氮分别增加了100.70%和104.70%;有效磷和速效钾增加更加显著,最终值达到22.34 mg·kg~(-1)和230.83 mg·kg~(-1),且随着有机物料施用量的增加,对酸性土壤的改良效果更好。黄腐酸钾对土壤酸度的改良效果优于其他物料,且不同用量的效应存在较大差异,在10.00 g·kg~(-1)用量时对土壤性质的影响最为明显。大田试验结果表明:所用有机物料显著改善了山核桃生长状况,提高了42.00%~58.00%的产量,与对照相比达到了极显著性差异水平(P0.01)。
[Abstract]:In order to study the effect of organic materials on acid soil of pecan Carya cathayensis woodland, the effects of biogas residue, fertilizer yield, potassium fulvic acid and bamboo charcoal on acid soil properties of pecan forest were studied by indoor culture. The effects of bamboo charcoal, fertilizer yield and potassium fulvic acid on the growth and yield of pecan forest were studied. The results showed that organic materials could significantly reduce soil acidity, increase soil pH value (P0.05N), increase soil pH value from pH 4.41 to pH 5.17, increase 17.00%, decrease soil exchangeable acid and exchangeable aluminum effectively, and increase soil exchangeable base. Among them, exchangeable aluminum decreased from 3.94 cmol / kg ~ (-1) to 0.72 cmol / kg ~ (-1), the decrease was as high as 81.70 ~ (-1). Organic materials also increased soil organic matter, available phosphorus, available potassium and alkali-hydrolyzed nitrogen by 100.70% and 104.70%, respectively, and available phosphorus and available potassium increased more significantly. The final values were 22.34 mg 路kg ~ (-1) and 230.83 mg 路kg ~ (-1) ~ (-1), and the improvement effect of acid soil was better with the increase of the application amount of organic materials. The improvement effect of potassium fulvic acid on soil acidity was better than that of other materials, and the effects of different amounts of potassium fulvic acid on soil acidity were different, and the effects on soil properties were most obvious at 10.00 g 路kg ~ (-1) 路kg ~ (-1). The results of field experiment showed that the organic materials significantly improved the growth of pecan, increased the yield by 42.00% and reached a very significant difference level compared with the control.
【作者单位】：浙江农林大学环境与资源学院浙江省土壤污染生物修复重点实验室;浙江省临安市湍口镇人民政府;浙江省杭州市林业科学研究院;
【基金】：浙江省科学技术公益项目(2015C33051) 国家自然科学基金资助项目(41201323) 浙江省林业科研成果推广项目(2013B13) 浙江农林大学科学研究发展基金资助项目(2005FR053)
【分类号】：S156.6;S664.4

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