| 青海蚕豆增施钾肥试验研究 |
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| 引用本文： | 张亚丽.青海蚕豆增施钾肥试验研究[J].青海农林科技,2014(1):1-3. |
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| 作者姓名： | 张亚丽 |
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| 作者单位： | 青海省农林科学院土壤肥料研究所,青海西宁810016 |
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| 摘 要： | 在互助县台子乡进行旱地种植蚕豆增施钾肥试验研究,为山旱地蚕豆高产施肥提供依据。结果表明:在施N、P肥基础上增施钾肥,能够提高蚕豆株高、分枝数、单株荚数、百粒重等农艺性状,蚕豆产量达到3017-4212kg·hm-2,增产13.8%-39.6%,新增收益1251-3402元·hm-2,产投比达到2.2-6.0∶1。钾肥对产量的效应符合"抛物线"肥料效应方程y=-0.075x2+19.187x+2936.9,(y=产量,x=施K2O量)。该试验条件下,K2O的最高产量施肥量为127kg·hm-2,蚕豆最高产量可达4164kg·hm-2;考虑肥料成本和蚕豆价格,蚕豆的最大利润施钾量为K2O 113.7kg·hm-2。
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| 关 键 词： | 青海 蚕豆 增施钾肥 平衡施肥 |
Effects of Potassium Fertilization on Broad Bean in Qinghai Province |
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| ZHANG Ya-li.Effects of Potassium Fertilization on Broad Bean in Qinghai Province[J].Science and Technology of Qinghai Agriculture and Forestry,2014(1):1-3. |
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| Authors: | ZHANG Ya-li |
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| Institution: | ZHANG Ya-li (Soil and Fertilizer Institute, Qinghai Academy of Agricuhure and Forestry, Xining Qinghai 810016, China) |
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| Abstract: | A field experiment of potassium fertilization on broad bean was carried out in Taizi town, Huzhu County to provide scientific evidence for high output - fertilization of broad bean in dry farmland Qinghai Province. The result shows potassium fertilizer application based on nitrogen and phosphorus fertilization improved agricultural characters of broad bean such as plant height, branching number, pods per plant, seeds per pod and 100 -seed weight, increased yield by 13.8% -39.6% with yield of 3017 -4212kg per ha. Increased income 1251 -3402Yuan per ha with ratio of output to input 2. 2 -6. 0： 1. The effect of potassium fertilizer amount on broad bean accord with parabolic curve ： y = - 0. 075x^2 ＋ 19. 187x ＋ 2936. 9, amount of potassium fertilizer for the optimal yield of broad bean,4164kg . ha^-1 was recommended as K2 O 127kg . ha^-1, the amount for the optimal income was K2O 113.7kg . ha^-1 under the experimental situation. |
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| Keywords: | Qinghai Province Broad bean Potassium fertilizer Balanced fertilization |
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