粉垄耕作对植烟土壤理化性质及团聚体特征的影响
Effect of Smash-ridging Technology on Soil Physicochemical Properties and Aggregates Characteristics of Flue-cured Tobacco Field
薄国栋 1胡希好 2王树键 3丁志勇 2赵福彬 2王耀斌 2邰振益 2刘红霞 2王启业 2申国明1
作者信息
- 1. 中国农业科学院烟草研究所,山东青岛 266100
- 2. 山东青岛烟草有限公司,山东青岛 266100
- 3. 山东中烟工业有限责任公司,山东济南250100
- 折叠
摘要
[目的]探究粉垄耕作对植烟土壤养分含量及团聚体结构影响,为粉垄耕作应用提供理论指导.[方法]以青岛烟区传统翻耕(CK)为对照,对比30 cm(SM1)、40 cm(SM2)、50 cm(SM3)粉垄深度下的土壤养分及团聚体特征的影响.[结果]在相同耕作深度条件下,粉垄耕作技术较传统耕作能够提高植烟土壤全氮、速效磷、有效钾及有机质含量.粉垄耕作增加>2.000 mm、>1.000～2.000 mm机械稳定性团聚体及>0.250 mm水稳定性团聚体含量,促进大团聚体及水稳定性团聚体形成,且以粉垄耕作深度40 cm时的养分含量、平均重量直径(MWD)及几何平均数(WMD)最大,分形维数(D)最小.[结论]粉垄耕作技术能够提高植烟土壤养分含量,改善土壤结构,且以40 cm粉垄深度作为青岛烟区最适宜的耕作深度.
Abstract
[Objective] To study the effect of smash-ridging technology on soil nutrients and soil structure of flue-cured tobacco field, and to provide theoretical guidance for the application of smash-ridging technology.[Method] The effects of different tillage depths (30, 40, 50 cm) of smash-ridging technology on soil nutrients and aggregate characteristics of Qingdao tobacco-planting soil were studied.[Result] Compared with traditional tillage (CK), the content of total nitrogen, available phosphorus, available potassium and organic matter in tobacco-planting soil could be improved by smash-ridging technology under the same tillage depth condition.The content of mechanical-stable aggregates at >2.000 mm, >1.000-2.000 mm particle size and the water-stable aggregates at >0.250 mm particle size were increased by smash-ridging technology which promoted the formation of large aggregates and water-stable aggregates.Meanwhile, the nutrient content, mean weight diam-eter (MWD) and geometric mean (WMD) were maximum and the fractal dimension (D) were minimum when the depth of smash-ridging technology was 40 cm.[Conclusion] The smash-ridging technology could improve the soil nutrient content and soil structure in Qingdao to-bacco-planting area,and the best effect was achieved when the depth of smash-ridging technology was 40 cm.
关键词
粉垄耕作/植烟土壤/土壤养分/团聚体特征Key words
Smash-ridging technology/Flue-cured tobacco field/Soil nutrients/Aggregate characteristics引用本文复制引用
基金项目
山东青岛烟草有限公司科技项目(2020370200240076)
出版年
2024
国家科技期刊平台
NSTL
万方数据