有机营养土壤改良剂对河西灌漠土理化性质和饲用高粱种植效益的影响

发布时间：2018-04-10 04:09

本文选题：有机营养土壤改良剂　切入点：灌漠土　出处：《干旱地区农业研究》2017年03期

【摘要】：针对甘肃河西内陆灌区因长期施用化肥引起的土壤板结、有机质含量低、贮水功能弱、作物产量低而不稳等问题,采用正交试验方法,筛选出有机营养土壤改良剂配方,采用田间试验方法,研究了有机营养土壤改良剂对灌漠土理化性质和饲用高粱种植效益间的影响。结果表明:原料间的效应(R)是饲用高粱专用肥改性糠醛渣保水剂和聚乙烯醇,改良剂配方组合是:改性糠醛渣0.9375∶保水剂0.0025∶饲用高粱专用肥0.0563∶聚乙烯醇0.0037。有机营养土壤改良剂施用量与灌漠土孔隙度、持水量、有机质、速效养分、饲用高粱农艺性状、经济性状和产量呈显著的正相关关系。经回归统计分析,有机营养土壤改良剂经济效益最佳施用量为24.00 t·hm-2时,饲用高粱理论产量为3.08 t·hm-2。有机营养土壤改良剂的施用有效改善了灌漠土理化性质,提高了饲用高粱的产量。
[Abstract]:Aiming at the problems of soil consolidation, low organic matter content, weak water storage function and low and unstable crop yield caused by long-term application of chemical fertilizer in inland irrigation area of Hexi, Gansu Province, the formula of organic nutrient soil improver was screened by orthogonal test.The effects of organic soil improver on the physicochemical properties of irrigated desert soil and the benefit of forage sorghum planting were studied by field experiment.The results showed that the effect between raw materials was modified furfural residue water-retaining agent and polyvinyl alcohol by special fertilizer for forage sorghum. The modifier formula was: modified furfural slag 0.9375; water-retaining agent 0.0025; forage sorghum special fertilizer 0.0563; polyvinyl alcohol 0.00377.There was a significant positive correlation between the amount of organic soil improver and the porosity, water holding capacity, organic matter, available nutrients, agronomic characters, economic characters and yield of forage sorghum.By regression statistical analysis, when the optimum economic benefit of organic soil improver was 24.00t hm-2, the theoretical yield of forage sorghum was 3.08 t 路hm ~ (-2).The application of organic soil improver improved the physicochemical properties of irrigated desert soil and increased the yield of forage sorghum.
【作者单位】：河西学院农业与生物技术学院;甘肃高校河西走廊特色资源利用省级重点实验室;甘肃敦煌种业股份有限公司;
【基金】：科技部国家星火项目“甘肃河西走廊百万亩现代化制种及加工装备技术示范推广”(S2011G100031) 甘肃省科技重大专项项目“高粱高效制种及加工生产技术研究”(2015GS05915)
【分类号】：S156.2;S54

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