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为探索改造中低产田的有效途径,以加深耕层和提高地力为目标,在辽宁省西部进行深松配套秸秆还田的4年定位试验。结果表明:深松和秸秆还田降低土壤容重、增加土壤孔隙度,土壤田间持水量则处理前两年增加后两年下降,处理当年效果最大之后减小;深松配套秸秆还田作用大于旋耕配套秸秆还田,深松条件下,配套秸秆还田第1年减产,隔年秸秆还田第2年、连年秸秆还田第3年增产;深松配套秸秆还田综合效果优于单独深松或秸秆还田。
In order to explore an effective way to rebuild middle and low yield fields, with 4-year positioning experiment of returning straw to maturity to deep soil in western Liaoning Province with the goal of deepening topsoil and improving soil fertility. The results showed that: Deep pine and straw returning reduced soil bulk density and increased soil porosity. Soil water holding capacity decreased in the first two years of treatment and then decreased in two years, and then decreased in the first year of treatment. Tillage supporting straw return to soil, under the conditions of deep straw, supporting straw returning the first year of reduced production, the second year of returning straw the following year, year after year straw return to increase yield; deep pine supporting straw comprehensive effect is better than alone Or straw to the field.