摘要
本文通过田间试验研究了二苯胺法快速诊断四川盆地小麦氮素营养状况的适用性，并采用该方法对农户进行了田间速测，指导农民追肥。试验结果表明，二苯胺法可以快速、准确地诊断小麦氮素营养状况；多点速测结果还表明，由于氮肥投入不足或施肥不合理致使目前四川盆地许多土壤上小麦缺氮相当普遍，也相当严重；诊断结果用于指导调查地区小麦追肥取得了显著的增产效果。
Based on field trials and on-farm investitation, this study deals with the adaptability of diphenylamine method to quickly diagnose wheat nitrogen nutritional status and its application in nitrogen fertilization in Sichuan Basin. The results suggests that: (1) this method can be used to diagnose the wheat nitrogen nutritional status quickly and precisely; (2) according to field quick testing results from many investigated sites, nitrogen deficiency of wheat in many soils of Sichuan Basin was a common phenomenon and serious problem for agricultural production, which is mainly due to the shortage of nitrogen fertilizer supply and the unreasonable use of fertilizer; (3) and significant increase of wheat yield were obtained by the application of quick testing method in guiding the utilization of nitrogen fertilizer at the investigated regions.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
1998年第1期63-67,共5页
Journal of China Agricultural University
关键词
氮
营养诊断
小麦
四川盆地
施肥
Nitrogen
Nutrient diagnosis
Wheat
Nitrogen deficiency
Sichuan Basin
