沼液复合微生物肥在灵武长枣上的应用效果研究

Study on effect of biogas slurry microbial fertilizer application on Zizyphus jujuba cv.Lingwuchangzao

针对大量施用化肥导致的宁夏特产灵武长枣产量不稳定、品质下降、土壤质量降低等问题,以常规施肥为对照,研究施用沼液复合微生物肥对灵武长枣生长特性、产量、品质及土壤养分的影响。结果表明:施用沼液复合微生物肥可提高盛花期叶片SPAD值,增强叶片光合作用;提高长枣单果质量、枣纵径及产量,增幅分别为5.53%、17.78%及6.19%;提高土壤铵态氮、硝态氮及速效磷含量,增加经济效益20655元/hm2。施用沼液复合微生物肥对宁夏灵武长枣高质量发展效果明显,建议在当地大面积推广使用。

In order to solve the problems of unstable yield,quality and soil quality of lingwu-changzao,a special product of Ningxia,caused by large-scale application of chemical fertilizer,a field experiment was carried out with conventional fertilization as control,the effects of biogas slurry compound microbial fertilizer on growth characteristics,yield,quality and soil nutrients of Lingwu Long Jujube were studied.The results showed that the application of biogas slurry compound microbial fertilizer could increase SPAD value,photosynthesis,weight per fruit,longitudinal diameter and yield of Long Jujube,the increase rates were 5.53%,17.78%and 6.19%,respectively,the contents of ammonium nitrogen,nitrate nitrogen and available phosphorus in soil were increased,and the economic benefit was increased by 20655 yuan/hm2.The application of biogas slurry compound microbial fertilizer has obvious effect on the high quality development of Lingwu changzao in Ningxia.