| 施肥对退化草甸草地土壤肥力和牧草群落结构及产量的影响 |
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| 引用本文： | 王高峰,安沙舟.施肥对退化草甸草地土壤肥力和牧草群落结构及产量的影响[J].现代农业科技,2010(9):278-278,287. |
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| 作者姓名： | 王高峰 安沙舟 |
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| 作者单位： | 1. 新疆维吾尔自治区昌吉州治蝗灭鼠指挥部办公室,新疆昌吉,831100
2. 新疆农业大学草业工程学院新疆草地资源与生态重点实验室 |
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| 基金项目： | 新疆现代化畜牧业试验示范项目 |
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| 摘 要： | 在昭苏马场退化天然草甸草地上按75、150、225、300kg/hm2用量进行单施尿素试验,结果表明:与不施肥比较,施肥对退化草地恢复具有明显的效果,在0~20cm土层中以土壤速效氮含量的增加最明显,且按施肥量增加,速效氮含量增加3.87%~33.15%;牧草种类增多,生物量增大,种群结构改善。施尿素225kg/hm2时,经济效益最好,净收益为345.0元/hm2,牧草产量为37.92t/hm2,是对照的1.6倍,差异均达到显著水平(P<0.05)。
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| 关 键 词： | 退化草地 施肥 土壤肥力 群落结构 牧草产量 影响 |
Effect of Fertilizers on Soil Fertility,Population Structure and Yield of Herbages in Degraded Grassland |
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| Authors: | WANG Gao-feng AN Sha-zhou |
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| Institution: | WANG Gao-feng 1 AN Sha-zhou 2 (1 Changji Headquatrer Office of Annihilate Grasshoppers and Grassland Mouses in Xinjiang Uygur Autonomous Region,Changji Xinjiang 831100,2 Xinjiang Key Laboratory of Grassland Resources and Ecology,Department of Grassland Science,Xinjiang Agricultural University) |
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| Abstract: | The urea fertilizing experiments were carried out in degraded grassland on the level of 75、150、225、300 kg/hm2 in Zhaosu Horse Farm. The results showed that fertilizer played a effective role in rapid restoration of degraded grassland. The content of available hydrolysable nitrogen of soil(0~20 cm)were significantly increased by 3.87%~33.15% respectively,compared with CK. The population structure of herbage has been markedly improved. Especially,when urea was broad casted by 225 kg/hm2,the weigh to herbage was 37.92 t/hm2,as many as 1.6 times of CK,the net income was 345.0 yuan/hm2,and difference reached significant leval(P<0.05). |
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| Keywords: | degraded grassland fertilizing soil fertility population structure yield of herbages effect |
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