摘要
应用三因素最优设计构造试验方案，研究氮肥、磷肥、钾肥不同水平与组合对苜蓿产量的动态关系。结果表明，磷肥对产量的影响最大，其次氮肥较小，钾肥最小。产量大于850kg／667m^2为优域．在63套方案中，在本试验条件下，苜蓿产量大于850kg／667m^2的农艺措施为：施氮肥5．524～7．805kg／667m^2、磷肥10．86～12．856kg／667m^2、钾肥0．583～3．749kg／667m^2。
The 3-factors optimum design experiment was conducted to investigate the dynamic relation between different levels and combinations of nitrogenous, phosphate and potassium fertilizers and yield of alfalfa. The results showed that the influence of phosphate fertilizer to yield was the largest, that of nitrogenous fertilizer was the second, and that of potassium fertilizer was the smallest. The optimum range of alfalfa yield was larger than 850 kg/667 m^2. In the 63 sets of scheme under test condition, the agronomic measures for the yield of more than 850 kg/667m^2 was： nitrogenous fertilizer 5. 524- 7. 805 kg/667m^2, phosphate fertilizer 10.86 12. 856 kg/667m^2, and potassium fertilizer 0. 583- 3. 749 kg/667m^2.
出处
《干旱地区农业研究》
CSCD
北大核心
2006年第5期50-54,共5页
Agricultural Research in the Arid Areas
基金
宁夏回族自治区发展和改革委员会科技攻关项目"城西滩扬黄灌区节水型高效生态农业建设技术研究与示范"
关键词
苜蓿
施肥处理
三因素最优设计
扬黄灌区
alfalfa
fertilizer application
3-factors optimum design
irrigation area of Yellow River
