| "黑土型"退化草地人工植被施肥试验研究 |
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| 引用本文： | 施建军,马玉寿,董全民,王柳英,王彦龙."黑土型"退化草地人工植被施肥试验研究[J].草业学报,2007,16(2):25-31. |
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| 作者姓名： | 施建军 马玉寿 董全民 王柳英 王彦龙 |
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| 作者单位： | 青海省畜牧兽医科学院,青海,西宁,810003 |
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| 摘 要： | 采用四因素二次通用回归旋转设计,以产草量为标准对“黑土型”退化草地上人工植被的施肥时间和氮磷钾的用量进行2年定位试验,建立牧草产量函数模型。结果表明,单因素增产效应为施肥当年:氮肥>磷肥>钾肥>施肥时间;第2年:氮肥>磷肥>施肥时间>钾肥。确定“黑土型”退化草地上人工植被的施肥组合方案为施肥时间在分蘖~7月上旬、N:75~130 kg/hm2、P2O5:50.0~112.5 kg/hm2、少施或不施钾肥,可取得较高的产量和经济效益。同时,为获得较高牧草产量,以每2年施肥1次为好。
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| 关 键 词： | “黑土型” 退化草地 人工植被 施肥 |
| 文章编号： | 1004-5759（2007）02-00Z5-07 |
| 收稿时间： | 2005-11-28 |
| 修稿时间： | 2005年11月28日 |
Studies of fertilizer application on the artificialy vegetated "Black soil type" degenerated grassland |
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| SHI Jian-jun,MA Yu-shou,DONG Quan-ming,WANG Liu-ying,WANG Yan-long.Studies of fertilizer application on the artificialy vegetated "Black soil type" degenerated grassland[J].Acta Prataculturae Sinica,2007,16(2):25-31. |
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| Authors: | SHI Jian-jun MA Yu-shou DONG Quan-ming WANG Liu-ying WANG Yan-long |
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| Institution: | Qinghai Academy of Animal and Veterinary Sciences, Xining 810016, China |
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| Abstract: | Adopting a quadratic regression rotation design with forage yield as the standard,the effects of fertilization time and nitrogen(N),phosphorus(P),and potassium fertilizer(K) on the artificially vegetated "Black soil type" degenerated grassland was studied in a two year field trial.Regression models of yield were developed.The effects of single factors were N>P>K> fertilization time in the same year and N>P> fertilization time > K in the second year.A suitable combined programme for fertilizer applications were N: 75130 kg/hm2,P2O5:50.0-112.5 kg/hm2 from tillering to the first ten days of July,with no or little potassium fertilizer.Fertilizing once every two years could give higher yields and better economic efficiency. |
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| Keywords: | "black soil typ"degraded grassland artificial vegetation fertilization |
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