干旱半干旱区草地灌水与施肥增产关系的研究

本试验明确了水、肥对干旱半干旱地区人工草地的一般增产规律。草地生产力的增产顺序是灌水＋施肥〉施肥〉灌水。试验结果表明，干草产量第一年（2004年）的增产幅度为：施肥49．1％-59．5％，灌水8．4％-20．7％，灌水加施肥92．4％-96．3％。第二年（2005年），由于在施肥加灌水的土壤中均有残留肥效，其干草产量仍比对照增产64.9％和41.3％。

The research of the relations between the yield on irrigation and fertilization on arid and semi -arid areas of turf

Test clear it is the general rules that water, fertilizer increase production on arid and semi - arid areas of artificial turf. The order of increase production on grassland productivity is that irrigation and fertilization higher fertilization higher irrigation. The results show that the rate of increase of hay production is fertilization 49.1 percent to 59.5 percent, irrigation 8.4 percent to 20.7 percent, irrigation and fertilization 92.4% to 96.3 % in the first year （2004）. The second year （2005）, as residual fertilizer efficiency in the soil fertilization and irrigation, the hay production is still increas 64.9 percante and 41.3 percent than control.