文山植烟土壤有效锌含量及其影响因素研究

发布时间：2018-04-24 18:15

本文选题：文山 + 植烟土壤　；参考：《土壤》2017年04期

【摘要】：为探明文山烟区植烟土壤有效锌分布情况及其影响因素,并为烤烟合理施用锌肥提供理论依据,运用GPS定位技术采集了276份土样,测定其有效锌含量,采用经典统计学方法和GIS技术,对其基本特征、空间分布状况及影响因素进行了分析。结果表明:(1)文山烟区植烟土壤有效锌平均含量为1.93 mg/kg,变幅为0.20~8.17 mg/kg,变异系数为70.47%,属于中等变异强度。全烟区有70.12%的区域土壤有效锌在适宜范围内(1.00~5.00 mg/kg)。(2)县域间植烟土壤有效锌平均含量从高到低排序为:麻栗坡西畴县文山县马关县砚山县丘北县广南县。(3)土壤中有效锌含量随着有机质增加而增大,随海拔升高呈抛物线变化;不同海拔组和有机质组间有效锌含量差异均达极显著水平。有效锌含量在土壤p H为6.5~7.5时最低,在偏酸和偏碱的环境中含量较高。(4)文山烟区分布最广的是红壤,其次是黄壤。不同土壤类型有效锌含量差异达极显著水平,含量最高的是水稻土,最低的是紫色土。因此,文山烟区植烟土壤有效锌含量总体满足优质烟叶生产的需求,部分缺锌区域应加强锌肥、有机肥的施用以提高土壤中有效锌含量。
[Abstract]:In order to explore the distribution of effective zinc and its influencing factors in tobacco planting soil in Wenshan, and to provide theoretical basis for rational application of zinc fertilizer to flue-cured tobacco, 276 samples of soil samples were collected by GPS positioning technology and the content of effective zinc was measured. The basic characteristics, spatial distribution and influencing factors were analyzed by using the classical statistical method and GIS technology. The results were as follows: (1) the average content of effective zinc in tobacco planting soil in Wenshan tobacco area was 1.93 mg/kg, the variation was 0.20~8.17 mg/kg, the coefficient of variation was 70.47%, which was of moderate variation. 70.12% of the soil available zinc in the whole tobacco area was in the suitable range (1.00~5.00 mg/kg). (2) the average content of effective zinc in soil cultivated in the county area was from high to low ranking as: Chestnut The content of effective zinc in soil increased with the increase of organic matter in Guangnan County, qiuoshan County, Wenshan County, Poe County, Poe Xichou county. (3) the content of effective zinc in different elevations and organic matter groups reached a very significant level. The content of effective zinc was the lowest when p H was 6.5~7.5 in soil soil, and it was in the ring of partial acid and alkali. 4. (4) the most widely distributed tobacco area is red soil, followed by yellow soil. The difference of effective zinc content of different soil types is very significant, the highest content is paddy soil, the lowest is purple soil. Therefore, the effective zinc content in tobacco planting soil in Wenshan is in general meet the demand of high quality tobacco production, some zinc deficiency areas should strengthen zinc Fertilizer and organic fertilizer were applied to improve the content of available zinc in soil.

【作者单位】：湖南农业大学烟草研究院湖南农业大学生物科学技术学院;广西中烟工业有限责任公司;
【基金】：云南省烟草公司项目(2011YN73)资助
【分类号】：S158;S572

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