摘要
为了充分利用松桃县盛产红薯的自然优势,把当地红薯产业做大做强,根据土壤样本的测试结果,结合土壤养分丰缺指标,从目标产量法角度出发,对泥质土壤氮、钾不同施用时期和施用比例对红薯产量的影响进行了研究。结果表明:泥质土壤氮钾分期施肥为好,其中,氮肥按基肥60%、苗肥25%和现蕾肥15%的比例,钾肥按基肥80%和现蕾肥20%的比例进行施用最佳,能显著提高肥料效应。产量最高的是处理3(为2 401.2kg/667m2),其次是处理2(为2 178.8kg/667m2),第三位是处理5(为2 066.22kg/667m2),前三位的产量分别比产量最低的处理7(为1 725.3kg/667m2)新增鲜薯675.89kg/667m2、453.56kg/667m2和340.91kg/667m2,分别增产39.17%、26.29%和19.76%。
To fully develop the natural advantages of abounding with sweet potato in Songtao County and make it bigger and stronger, the effects of applying period and proportion of nitrogen and potassium on sweet potato yield in muddy soil were studied. The results showed that the fertilizer effect could be significantly enhanced in different stages with different amount of N and K （base fertilizer, 60% N and 80% K; fertilizer for seed bed, 25% N; budding fertilizer, 15% N and 20% K）. The yield of Treatment 3 was the highest （2 401. 2 kg/667m2）, Treatment 2 took the second place （2 178. 8 kg/667m2） and Treatment 5 took the third place（2 066.22 kg/667m2）. They were higher than Treatmevnt 7（1 725.3 kg/ 667m2）by 675.89 kg/667m2（39, 17%）, 453. 56 kg/667m2（26. 29%） and 340. 91 kg/667m2（19. 76%） respectively.
出处
《贵州农业科学》
CAS
北大核心
2012年第7期80-83,共4页
Guizhou Agricultural Sciences
基金
国家农业部现代农业技术体系"国家甘薯产业体系贵阳综合试验站"(CARS-11-C-24)
贵州省农业科技攻关"贵州甘薯种质资源创新与利用"[黔科合NY(2009)3015]
贵阳市农业科技攻关"紫心特用甘薯产业化关键技术的研究与示范"[(2010)筑科农合同字第1-农-07]
贵州省农科院专项"鲜食甘薯新品种选育研究"[黔农科院院专项(2010)020]
关键词
红薯
泥质土壤
施肥时期
配方施肥
sweet potato
muddy soil
fertilization period
prescription fertilization
