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 0
The 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.
出处
《西北农业学报》
CSCD
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
关键词
氮肥
营养诊断
快速测定
冬小麦
夏玉米
施肥量
Nitrogen fertilizer recommendation
Nutritional diagnosis
Quick test
Wheat
Corn
