摘要
为获取油菜作物氮磷钾养分吸收量、土壤养分丰缺指标、氮磷钾肥料利用率等参数,建立油菜施肥函数模型,完善油菜施肥指标体系,指导大田油菜精准施肥,勉县农技中心在油菜生产上开展了氮磷钾不同配比肥效试验,通过试验建立了油菜氮磷钾三元二次肥料效应方程,获得了最佳经济施肥量纯N 13 kg/667 m^(2),P_(2)O_(5)6.3 kg/667 m^(2),K_(2)O 6.1 kg/667 m^(2),经济产量203 kg/667 m^(2),投入产出比1∶4.7。施肥建议:勉县平川丘陵区中等肥力地块,油菜籽目标产量200 kg/667 m^(2)左右,667 m^(2)施纯氮13 kg、五氧化二磷6 kg、氧化钾6 kg、硼肥1 kg。
In order to obtain parameters such as nitrogen, phosphorus and potassium nutrient absorption of rape crops, soil nutrient abundance and deficiency index, utilization rate of nitrogen, phosphorus and potassium fertilizer, establish fertilization function model for rape production, make rape fertilization index system perfect and guide accurate fertilization for field rape, a fertilizer efficiency experiment with different ratios of nitrogen, phosphorus and potassium in rape production was conducted by Agriculture Technology Extension Center of Mianxian County, pure N 13 kg/667 m^(2), P_(2)O_(5)6.3 kg/667 m^(2), K_(2)O 6.1 kg/667 m^(2)were the best economic fertilization amount, the economic output was 203 kg/667 m^(2), input-output ratio was 1∶4.7, which were obtained by establishing the ternary secondary fertilizer effect equation of nitrogen, phosphorus and potassium in rape production.In the hilly area of Mianxian county, the target yield of rapeseed was about 200 kg/667 m^(2)with application of 13 kg of pure nitrogen, 6 kg of phosphorus pentoxide, 6 kg of potassium oxide and 1 kg of boron fertilizer per 667 m^(2).
作者
祁海东
张世林
疗理红
石荣波
QI Haidong;ZHANG Shilin;LIAO Lihong;SHI Rongbo(Agriculture Technology Extension Center of Mianxian County,Mianxian,Shaanxi 724200,China;Tea Industry Technology Extension Ccenter of Mianxian County,Mianxian,Shaanxi 724200,China;Xinpu Town Agriculture Comprehensive Service Station of Mianxian County,Mianxian,Shaanxi 724200,China;Service Center for Organic Industry Development of Yangxian County,Yangxian,Shaanxi 723300,China)
出处
《陕西农业科学》
2022年第3期1-3,共3页
Shaanxi Journal of Agricultural Sciences
关键词
油菜生产
氮磷钾
肥效试验
Rape production
Nitrogen
Phosphorus and potassium
Fertilizer efficiency test
