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土壤有机质状况是衡量农田土壤肥力和生产力水平的基本标志之一。培肥土壤主要依靠有机肥料。但近年来随着农村多种经营的发展,农民不是积极将多余劳力投于农肥的积攒,增产主要靠化肥。有鉴于此,不少人认为长此下去会导致土壤肥力的下降,影响增产。究竟单施化肥对地力及产量的影响如何,施用多少有机物质才能保持或提高土壤肥力?以往缺少系统研究。本文仅就八年定位试验结果提供有关资料,并据此提出对解决今后土壤有机质平衡的看法和依据。
Soil organic matter status is one of the basic indicators of soil fertility and productivity of farmland. Soil fertility depends mainly on organic fertilizers. However, in recent years, with the development of diversified operations in rural areas, farmers are not actively investing excess farm labor in the accumulation of agricultural fertilizer. The increase in production mainly depends on the use of fertilizers. In view of this, many people think that the long run will lead to the decline of soil fertility, affecting the yield. What is the effect of applying chemical fertilizers on soil fertility and yield? How much organic matter is applied to maintain or enhance soil fertility? In the past, there was a lack of systematic research. In this paper, only eight years of positioning test results provide relevant information, and accordingly put forward to solve the future soil organic matter balance of view and basis.