不同栽植年限苹果梨园秋季土壤有机磷组分的剖面分布特征
发布时间：2018-11-28 17:16
【摘要】：为了阐明不同栽植年限苹果梨园土壤剖面中有机磷组分的分布特征,于秋季在延边州龙井市选取栽植年限为11,25,40,50,63年的苹果梨园布置剖面点,分别挖掘剖面,根据土壤性态划分土壤自然发生层,分层采集土壤样品,采用改进的Bowman-Cole法测定有机磷组分含量。结果表明:龙井不同栽植年限苹果梨园土壤的不同形态有机磷及总提取有机磷含量基本趋势为随土层加深含量下降。随着栽植年限的增加,不同形态有机磷和总提取有机磷基本呈先增加后减少的趋势,上部土层表现较明显,25年或40年时含量最高。苹果梨园和对照组有机磷各组分占有机磷总量的比例不尽相同,其中所占比例最大组分均为中活性有机磷,为延边苹果梨园土壤中最重要的有机磷形态。在表层,随着栽植年限的增加,活性有机磷占总提取有机磷比例呈逐渐减少的趋势,但40年以后差别不大,40年高稳性有机磷比例最高。在中部土层,随着栽植年限的增加,中稳性有机磷有向中活性有机磷转化的趋势。底部土层除了中稳性有机磷有小部分向中活性有机磷转化外,还有逐渐老化为高稳性有机磷的趋势。
[Abstract]:In order to elucidate the distribution characteristics of organophosphorus components in soil profile of apple pear orchard with different planting years, in autumn in Longjing city, Yanbian city, the apple pear orchard with planting life of 1125% 40 / 50 and apple pear orchard for 63 years was selected and the sections were excavated separately. Soil natural layers were divided according to soil properties and soil samples were collected by stratification. The content of organophosphorus was determined by improved Bowman-Cole method. The results showed that the content of organic phosphorus in different forms of soil and total organic phosphorus content decreased with the deepening of soil layer in Longjing with different planting years of apple pear orchard. With the increase of planting years, organic phosphorus of different forms and total organic phosphorus extraction showed a trend of first increasing and then decreasing. The content of organic phosphorus in upper soil layer was more obvious than that in 25 or 40 years, and the content of organic phosphorus was the highest at 25 or 40 years. The proportion of organophosphorus in apple pear orchard and control group was different. The most important organic phosphorus form in the soil of apple pear orchard in Yanbian was the most active organic phosphorus. In the surface layer, with the increase of planting years, the proportion of active organophosphorus to total extracted organophosphorus decreased gradually, but after 40 years, the difference was not obvious, and the proportion of high stable organic phosphorus in 40 years was the highest. In the middle soil layer, with the increase of planting years, the medium stable organophosphorus has the tendency to convert to the middle active organic phosphorus. In addition to the transformation of moderately stable organophosphorus to moderately active organophosphorus in the bottom soil layer, there is a tendency of aging to high stable organophosphorus gradually.
【作者单位】： 延边大学农学院;黑龙江技师学院;长春大学园林学院;
【基金】：国家自然科学基金项目(31460117)
【分类号】：S153.6
，
本文编号：2363660
[Abstract]:In order to elucidate the distribution characteristics of organophosphorus components in soil profile of apple pear orchard with different planting years, in autumn in Longjing city, Yanbian city, the apple pear orchard with planting life of 1125% 40 / 50 and apple pear orchard for 63 years was selected and the sections were excavated separately. Soil natural layers were divided according to soil properties and soil samples were collected by stratification. The content of organophosphorus was determined by improved Bowman-Cole method. The results showed that the content of organic phosphorus in different forms of soil and total organic phosphorus content decreased with the deepening of soil layer in Longjing with different planting years of apple pear orchard. With the increase of planting years, organic phosphorus of different forms and total organic phosphorus extraction showed a trend of first increasing and then decreasing. The content of organic phosphorus in upper soil layer was more obvious than that in 25 or 40 years, and the content of organic phosphorus was the highest at 25 or 40 years. The proportion of organophosphorus in apple pear orchard and control group was different. The most important organic phosphorus form in the soil of apple pear orchard in Yanbian was the most active organic phosphorus. In the surface layer, with the increase of planting years, the proportion of active organophosphorus to total extracted organophosphorus decreased gradually, but after 40 years, the difference was not obvious, and the proportion of high stable organic phosphorus in 40 years was the highest. In the middle soil layer, with the increase of planting years, the medium stable organophosphorus has the tendency to convert to the middle active organic phosphorus. In addition to the transformation of moderately stable organophosphorus to moderately active organophosphorus in the bottom soil layer, there is a tendency of aging to high stable organophosphorus gradually.
【作者单位】： 延边大学农学院;黑龙江技师学院;长春大学园林学院;
【基金】：国家自然科学基金项目(31460117)
【分类号】：S153.6
，
本文编号：2363660
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