摘要
以高产优质大花生主推品种湘花2008为材料,在底施不同肥料的基础上,设置苗期追施尿素、花针期喷施多效唑化控的田间小区试验。结果表明,播前施基肥、苗期追施尿素、花针期喷施多效唑等均会延长花生全生育期。株高随着施氮量的增加而增高,喷施多效唑会抑制植株生长,降低株高。湘花2008分枝力较强,苗期追施尿素对花生的分枝力有明显的促进作用。适当增施化肥或化控有较好的增产效果和经济效益。其中A处理即666.7m2底施25%氮磷钾复合肥50kg+苗期追施尿素10kg+花针期喷施多效唑30g荚果产量最高,达339.8kg,比不施肥对照增产50.75%,经济效益最好;B、C处理减氮钾肥,增钙镁肥,分别比对照增产40.02%和33.76%;D处理为一次性施肥,增产亦达30.92%。A、B、C、D处理纯收入较高,分别比对照高81.29%、70.69%、63.29%、52.77%。
The field plot test was conducted with high -yielding and good-quality peanut cultivar Xian-ghua 2008 as material .Based on the basal application of different fertilizers , topdressing urea at seedling stage and spraying paclobutrazol at pegging stage were set in the test .The results showed that basal fertilization be-fore seeding , topdressing urea at seedling stage and spraying paclobutrazol at pegging stage all could prolong the peanut growth period .The planTheight increased with the increase of nitrogen application rate .Spraying paclobutrazol could inhibit peanut plant growth , and decrease the planTheight .Xianghua 2008 had stronger branchiness , and topdressing urea at seedling stage had obvious promoting effect on peanut branchiness .Ap-propriately increasing chemical fertilizer or chemical treatment had better yield increasing effect and economic benefit.The treatment A, that is to say, basal application of 50 kg 25%NPK compound fertilizer, topdressing 10 kg urea at seedling stage and spraying 30 g paclobutrazol at pegging stage per 666.7m2 , could obtain the highest pod yield as 339.8 kg, which increased by 50.75% compared to the control, and also the best eco-nomic benefit .The treatments B and C , which decreased nitrogen and potassium fertilizers and increased cal-cium and magnesium fertilizers , increased the pod yield by 40 .02%and 33 .76%respectively .The treatment D, which was fertilization all in one time , increased the pod yield by 30.92%.The treatments A, B, C and D obtained higher net benefit , which increased by 81.29%, 70.69%, 63.29% and 52.77% respectively compared to the control .
出处
《山东农业科学》
2015年第3期59-62,共4页
Shandong Agricultural Sciences
基金
国家现代农业产业技术体系建设专项(CARS-14)
关键词
花生
施肥
化控
经济效益
产量
Peanut
Fertilization
Chemical control
Economic benefit
Yield
