河西走廊旱塬长期定位施肥对土壤理化性质及春小麦增产效果的研究

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。

Dry Yuan of River West Lorridor Uhich has Long-term Location Fertilizer Increase Soil Properties and the Production of Spring Wheat

In dry Yuan of river west which fills the fertilizer location test of11year,the results showed that:organic fertilizer,chemical N fertilizer and P fertilizer coordinating with each other had a good effect on the soil properties and the output of wheat.We compared organic fertilizer coordinating with N fertilizer and P(MNP) fertilizer to chemical N fertilizer coordinating with P(N) fertilizer,and found that,in 0~20cm plunge layer,soil organic quality and soda untie N,available P,and avilable K increased by 1.40g kg~(-1),14.01 mg kg~(-1),7.04mg kg~(-1) and 14.08 mg kg~(-1) respectively;Soil hole degree,granular structure,natural water content and water content of soil increased by 4.15%,8.32%,66.85 g kg~(-1) and 177.15m~3 ha~(-1) respectively;wheat output of fertilizer increased by 1.94t ha~(-1) 0.21×10~4 Yuan ha~(-1) and 0.14×10~4 Yuan ha~(-1) respectively;the efficiency of fertilizer of fertilizer investment was 1.39 Yuan.The efficiency of fertilizer bet among different treatments were:MNP>MN,MP and NP>M,N and P>CK.