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| 泥质土壤氮钾不同施用时期及比例对红薯产量的影响 | |
| 引用本文： | 杨顺礼,李云,石乔龙,滕树川,石金芝,李华荣,刘敬,张熙. 泥质土壤氮钾不同施用时期及比例对红薯产量的影响[J]. 贵州农业科学, 2012, 40(7): 80-83 |
| 作者姓名： | 杨顺礼 李云 石乔龙 滕树川 石金芝 李华荣 刘敬 张熙 |
| 作者单位： | 1. 松桃苗族自治县土肥站,贵州松桃,554100 2. 贵州省生物技术研究所,贵州贵阳,550006 3. 铜仁市土肥站,贵州铜仁,554300 |
| 基金项目： | 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”，贵州省农业科技攻关“贵州甘薯种质资源创新与利用”，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”，贵州省农科院专项“鲜食甘薯新品种选育研究” |
| 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2 401.2 kg/667m2),其次是处理2(为2178.8 kg/667m2),第三位是处理5(为2 066.22 kg/667m2),前三位的产量分别比产量最低的处理7(为1 725.3 kg/667m2)新增鲜薯675.89 kg/667m2、453.56kg/667m2和340.91 kg/667m2,分别增产39.17％、26.29％和19.76％. |
| 关 键 词： | 红薯 泥质土壤 施肥时期 配方施肥 |
Effects of Applying Period and Proportion of Nitrogen and Potassium on Sweet Potato Yield in Muddy Soil |
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| YANG Shun-li , LI Yun , SHI Qiao-long , TENG Shu-chuan , SHI Jin-zhi , LI Hua-rong , LIU Jing , ZHANG Xi. Effects of Applying Period and Proportion of Nitrogen and Potassium on Sweet Potato Yield in Muddy Soil[J]. Guizhou Agricultural Sciences, 2012, 40(7): 80-83 | |
| Authors: | YANG Shun-li LI Yun SHI Qiao-long TENG Shu-chuan SHI Jin-zhi LI Hua-rong LIU Jing ZHANG Xi |
| Affiliation: | 1.Songtao Soil and Fertilizer Station,Songtao,Guizhou 554100;2.Guizhou Institute of Biotechnology,Guiyang,Guizhou 550006;3.Tongren Soil and Fertilizer Station,Tongren,Guizhou 554300,China) |
| Abstract: | 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. |
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