湘西南石灰岩红壤区苗木土壤的问题与对策  

Problems of Nursery Stock Soil in Limestone Red Soil Area of Southwest Hunan and Countermeasures

作　　者：张鹏博[1] 何石福 盛浩[1] 张杨珠[1] 

机构地区：[1]湖南农业大学资源环境学院,湖南长沙410128

出　　处：《湖南农业科学》2016年第3期46-48,共3页Hunan Agricultural Sciences

基　　金：湖南省自然科学基金项目(13JJ4066)

摘　　要：通过实地调查湘西南石灰岩区一个苗木基地红壤的利用状况,发现苗木生产7~8 a后土壤问题较为突出,包括表土质地粘重化,有机质含量偏低;强烈的土地整理和坡地整地造成部分地块的基岩裸露,表土中石块混杂,土壤肥力不均;地面覆盖差,易旱,水土流失较为突出;苗木施肥量不足、施肥方式和有机肥生产工艺有待完善。针对上述问题,建议在石灰岩红壤的苗木生产中,加强深耕松土,有机物肥土,增加覆盖度,改进苗木施肥技术及增强土壤管理人员的技能。Based on a field investigation on the utilization status of the red soil of a nursery stock production base in the limestone area of southwest Hunan province, we found out that soil problems became prominent after 7~8 years of nursery stock production, e.g. topsoil texture became heavier, and the content of soil organic matter decreased; in some cases, the bare rock was exposed, topsoil was damaged by mixing with coarse stones, and soil fertility became uneven due to strong land consolidation and slope preparation activities; part of the land surface had low or non-coverage leading to a drought-prone soil condition as well as severer soil and water loss; the fertilizer application rate for nursery stocks was inadequate, and fertilization methods and the production technology of organic fertilizer remained to be improved. In allusion to the problems mentioned above, it was suggested that in the production process of nursery stocks in the limestone red soil, it is necessary to promote deep tillage and loosening the soil, apply organic fertilizers, increase surface coverage, improve the fertilization technology, and strengthen the skills of soil management staff.

关 键 词：园林园艺土壤 施肥 土壤质地 土壤肥力 

分 类 号：S723.7[农业科学—林木遗传育种]