微喷灌水肥一体化技术对土壤理化性质及生姜产量的影响

Effects of Water and Fertilizer Integration Technology on Soil Physicochemical Properties and Yield of Ginger under Micro-sprinkler Irrigation

以冀姜5号为试材,常规灌溉施肥为对照,研究微喷灌水肥一体化技术对土壤理化性质及其产量的影响。结果表明,整个生育期微喷灌水分总消耗量低于沟灌149 m^(3)/667 m^(2),节水15.94%,水分生产效率提高26.84%;水肥一体化处理土壤养分含量高于对照,总盐含量低于对照,苗期土壤中的有机质、碱解氮、有效磷、速效钾的含量分别比对照高2.61%,15.45%,16.33%,2.70%,碱解氮、有效磷在发棵期和根茎膨大期均显著高于对照,速效钾只在根茎膨大期高于对照,pH值无明显变化;生姜微喷灌水肥一体化技术平均产量5 778.59 kg/667 m^(2),较对照增产10.07%,节肥20%,肥料偏生产力提高24.01%。

In this paper,Jijiang No.5 was used as the test material,and conventional irrigation and fertilization were used as the control to study the effects of micro-spraying irrigation water-fertilizer integration technology on soil physicochemical properties and yield.The results showed that during the whole growth period,the total water consumption of micro-sprinkler irrigation was 149 m^(3)/667 m^(2) lower than that of trench irrigation,the water saving was 15.94%,and the water production efficiency was increased by 26.84%.The soil nutrient content of the integrated water-fertilizer treatment was higher than that of the control,and the total salt content was lower than that of the control.The contents of organic matter,alkali-hydrolyzed nitrogen,available phosphorus and available potassium in the seedling stage were 2.61%,15.45%,16.33%and 2.70%higher than that of the control,respectively.The available potassium was higher than that of the control only in the rhizome swelling stage,and the pH value had no obvious change.The average yield of micro-spraying irrigation water-fertilizer integration technology was 5778.59 kg/667 m^(2),10.07%higher than the control,20%less fertilizer and 24.01%higher fertilizer partial productivity.