冬小麦-夏玉米轮作氮肥施量与氮营养诊断  

Recommendation of Nitrogen Fertilizer and Nitrogen Nutritional Diagnosis in Wheat Corn Rotation

作　　者：张树兰 同延安 赵护兵 孙本华 方日尧 梁东丽 杨学云 高义民 

机构地区：[1]陕西省土壤肥料研究所,杨陵712100

出　　处：《西北农业学报》2000年第2期104-107,共4页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：九五农业部引进项目资助

摘　　要：通过田间试验研究土娄土冬小麦和夏玉米氮肥施用量以及反射仪法在两种作物氮营养诊断中的应用。结果表明 ,冬小麦和夏玉米氮肥最适施用量为 2 0 0～ 2 2 6.6kg/hm2 和 1 1 2 .3～ 2 0 5kg/hm2 。反射仪法测得的 NO- 3和流动注射法比较 ,证明反射仪法可作为一种快速常规分析方法。两种作物采用反射仪法进行氮素营养诊断的临界值分别为冬小麦 1 1 0 0～ 1 650 mg/kg,夏玉米 1 2 0 0～ 1 60 0The rate of nitrogen application and quick test method for diagnosing nitrogen for two crop winter wheat and summer corn were studied in field plot experiment.The results suggested that the optimum rate of nitrogen recommended for winter wheat and summer corn were considered to be 200～ 226.6 kg/hm 2 and 112.3～205 kg/hm 2,respectively. The test value measured by the nitrate test strip had a good relationship with that of flow injetion analysis (FIA) So the nitrate test strip could be used as common test method with the quick and simple character. The critical value of nitrate ranged from 1100～ 1650 mg/kg for wheat and from 1200～ 1600 mg/kg for corn.

关 键 词：氮肥 营养诊断 快速测定 冬小麦 夏玉米 施肥量 

分 类 号：S344[农业科学—作物栽培与耕作技术]