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在河西走廊旱塬灌漠土上连续11年肥料定位试验结果表明:有机肥料、化学N肥、P肥3种肥料配合施用,对土壤理化性质和小麦产量有良好的影响。其中有机肥料与化学N肥、P肥(MNP)配合施用与化学N肥、P肥(NP)配合施用比较,0~20 cm耕层土壤有机质、碱解N、速效P、速效K分别增加1.40g kg-1、14.01mg kg-1、7.04 mg kg-1、14.80mg kg-1;土壤总孔度、团粒结构、自然含水量、土壤贮水量分别增加4.15%、8.32%、66.85g kg-1、177.15m3hm-2;小麦产量、产值、施肥利润分别增加1.94 t hm-2、0.21×104元hm-2、0.14×104元hm-2;肥料投资效率达1.39元/元。不同处理间的肥效是MNP>MN、MP、NP>M、N、P>CK。
The results of fertilizer locating experiments on irrigated desert soil in dry land of Hexi Corridor for 11 consecutive years showed that the combination of three kinds of fertilizers, organic fertilizer, chemical N fertilizer and P fertilizer, had a good effect on soil physical and chemical properties and wheat yield. The organic matter, chemical N fertilizer, P fertilizer (MNP) combined application of chemical fertilizers and chemical fertilizers NP and P fertilizer NP increased soil organic matter, available N, available P and available K by 020 cm g kg-1, 14.01mg kg-1,7.04 mg kg-1, and 14.80mg kg-1 respectively. The total soil pore size, aggregate structure, natural water content and soil water storage capacity increased by 4.15%, 8.32%, 66.85g kg- 1,177.15m3hm-2. The yield, output and profit of wheat increased by 1.94 t hm-2,0.21 × 104 hm-2,0.14 × 104 hm-2 respectively. The investment efficiency of fertilizer was 1.39 yuan / yuan. Fertilizer efficiency among different treatments was MNP> MN, MP, NP> M, N, P> CK.