Influences of Fertilization and Chemical Treatment on Yield and Economic Benefit of Peanut

Wang Jing; Liu Dengwang; Li Lin; Wang Jianguo; Ma Jie; Tan Hongjiao; Xiao Mi

doi:10.14083/j.issn.1001-4942.2015.03.017

Abstract：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 .