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采用单形格子配方试验设计方法,对河西走廊灌漠土高产农田中农肥、绿肥、秸秆和尿素配合施用对产量的影响进行了17年的定位试验研究,建立了不同试验阶段数学模型并进行了分析。结果表明,河西走廊灌漠土区影响产量作用大小的排列顺序为:尿素>绿肥≥农肥>秸秆。化学肥料尿素是河西走廊高产的保证,配合尿素种植绿肥或施用农肥可以更加稳产,秸秆在试验前期无效或有负效应,但12年后有明显的增产作用。河西走廊灌漠土区有机与无机肥料配合施用的最优方案是:农肥21169 kg hm-2,绿肥8704 kg hm-2,尿素为514 kg hm-2,所能达到的目标产量17年平均是10156 kg hm-2。
In this paper, a single grid lattice experimental design method was used to study the influence of the combined application of fertilizer, green manure, straw and urea on the yield of irrigated desert highland farmland in Hexi Corridor for 17 years. The mathematical models of different stages of the experiment were established and carried out analysis. The results showed that the order of effect of yield on the desertification area in Hexi Corridor was as follows: urea> green manure> agricultural fertilizer> straw. Fertilizer urea is a guarantee of high yield in Hexi Corridor. Combined with urea planting green manure or application of agricultural fertilizer can be more stable, straw in the early test is invalid or negative effect, but 12 years after a significant increase in yield. The optimal plan of combined application of organic and inorganic fertilizers in Hezuo corridor irrigation area is: 21169 kg hm-2 of agricultural fertilizer, 8704 kg hm-2 of green manure and 514 kg hm-2 of urea, the average annual yield of 17 years can reach 10,156 kg hm-2.