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1981—1986年在黄潮土上的小麦—玉米肥料定位试验,对肥料用量、作物吸收量和土壤养分积累量的回归分析结果:化肥N和有机肥N有8.76%和42.54%进入土壤N库;化肥P和有机肥P有17.61%和17.20%进入土壤速效P库;化肥K和有机肥K有4.5%和2.3%进入土壤速效K库。化肥对土壤有机质含量略有增加趋势,有机肥对补给土壤P、K养分,改善土壤物理性状有明显效果。有机无机配合施用具有培肥、增产两方面的作用。
The results of regression analysis of fertilizer application, crop uptake and soil nutrient accumulation in 1981-2006 wheat-corn fertilizer experiment on yellow soil showed that fertilizer N and organic fertilizer N reached 8.76% and 42.54%, respectively, P and organic fertilizers P accounted for 17.61% and 17.20%, respectively, and entered the soil available P store. The chemical fertilizer K and organic fertilizer K had 4.5% and 2.3% Fertilizer on the soil organic matter content slightly increased trend of organic fertilizer on soil P, K nutrients, improve soil physical properties have a significant effect. Organic and inorganic application with fertilizer, increase production in two ways.