| 谢奎忠,黄高宝,李玲玲,许爱霞,赵君范,李宗伟.施钾对旱地豌豆产量、水分效应及土壤钾素的影响[J].干旱地区农业研究,2007,(5):15~19 |
| 施钾对旱地豌豆产量、水分效应及土壤钾素的影响 |
| The effect of application of potassium on the yield of field pea water use efficiency and potassium in soil in sem-i arid area of Gansu |
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| DOI：10.7606/j.issn.1000-7601.2007.05.03 |
| 中文关键词: 黄绵土 钾肥 豌豆 土壤水分 旱地 |
| 英文关键词:Huangmian soil potassium fertilizer field pea soil moisture dryland farming |
| 基金项目:中澳合作项目ACIAR“提高甘肃黄土高原西部雨养农业系统生产力及其可持续性的研究”(LWR2/1999/094)； 甘肃省农牧厅资助项目(044048)； 中国农村技术开发中心资助项目(0390933) |
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| 中文摘要: |
| 2006年在陇中黄绵土上进行的钾肥肥效试验表明:黄绵土已出现钾素亏缺,施用钾肥能显著增加豌豆的耗水量,增大叶面积、单株节数、结荚数和单株豆粒数,增加了千粒重,从而提高了产量、经济系数、耗水量和水分利用率。与对照相比,其中施纯K2 37.5 kg/hm2时,豌豆增产最大,增产26.7%,耗水量最大,增加14.5%,水分利用效率增加10.5%,经济系数提高17.2%。并建立了陇中地区钾肥适宜施用量与豌豆产量的数学模型y=0.0006x3-0.1576x2+10.973x+895.91,当钾肥施用量达到43.4 kg/hm2时,经济效益最高。施钾能增加土壤速效钾含量和植株全钾含量。 |
| 英文摘要: |
| The potassium application of field pea experiment was conducted in Huangmian soil in the semi-arid area of Gansu in 2006.The results showed that potassium in Huangmian soil was not enough for the growth of crop.Applying potassium could significantly increase the evapotranspiration and the yield factor of field pea,therefore,the yield,the water use efficiency and the economic coefficient of field pea were improved.Compared with CK,the application rate of K2 reached 37.5 kg/hm2,the yield,the evapotranspiration,the water use efficiency and the economic coefficient of field pea increased 26.7%,14.5%,10.5% and 17.2% respectively.And under this application rate,both the yield and the evapotranspiration were the highest.Mathematic model between the application potassium and the yield of field pea was y=0.0006x3-0.1576x2+10.973x+895.91. The potassium application rate at 43.4 kg/hm2,the economic efficiency reached the highest.Application potassium could increase the content of available potassium in soil and the content of total potassium in plants. |
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