推广腐植酸类肥料提高黑土地肥力

Promoting Humic Acid Fertilizers to Improve Black Soil Fertility

耕地质量与土壤肥力事关国家粮食安全,而东北黑土地作为世界上四大黑土区之一,是我国最重要的粮食生产基地和商品粮输出基地,在保障国家粮食安全中起到“压舱石”的作用。本文综述了东北黑土地质量退化与肥力下降的主要表现,阐明了腐植酸类肥料对提高黑土地土壤有机质、增加土壤速效养分和改善黑土地土壤物理性质等方面的重要作用。可见,在东北黑土区推广使用腐植酸系列肥料可以为黑土地肥力提高、保障国家粮食安全发挥积极作用。

The quality of cultivated land and soil fertility are matters of national food security.As one of the four black soil regions in the world,Northeast black soil is the most important grain production base and commodity grain export base for China,and plays a“ballast”role in ensuring national food security.This paper summarized the main evidences of the quality degradation and fertility decline of the Northeast black soil in China,and expounded the important role of humic acid fertilizers in improving the organic matter of the black soil,increasing the available nutrients of the soil and improving the physical properties of the black soil.It seemed that the widespread use of series humic acid fertilizers in this region could play a positive role in improving the fertility of the black soil and ensuring national food security.