| 降水对青海同德高寒草地牧草产量影响的积分回归分析 |
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| 引用本文： | 刘剑霞,王军,胡小玲.降水对青海同德高寒草地牧草产量影响的积分回归分析[J].畜牧与饲料科学,2010,31(1):83-85. |
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| 作者姓名： | 刘剑霞 王军 胡小玲 |
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| 作者单位： | 1. 青海省同德县气象局,青海,同德,813200
2. 青海省雷电灾害防御中心,青海,西宁,810001 |
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| 摘 要： | 利用积分回归的基本原理,并以青海省同德县巴滩高寒草地牧草产量为例,运用积分回归分析气象要素与牧草产量的关系,确定了青海省同德县巴滩高寒草地不同生育时段的降水对牧草产量的影响效应。结果表明,降水对高寒天然草地牧草产量的影响正效应为4月上中旬、5月下旬—7月上旬和8月下旬3个阶段,降水量每增加1mm,牧草产量最大增加138.2,80.1,53.8kg/hm2;负效应为4月下旬—5月中旬和7月中旬—8月中旬2个阶段,降水量每增加1mm,牧草产量相应最多减少23.1,43.7kg/hm2。
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| 关 键 词： | 高寒草地 牧草产量 降水 积分回归 |
Regressive Anaylsis of The Effect of Precipitation on Yield of Pasture at High and Cold Area Tongde County |
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| LIU Jian-xia,WANG Jun,HU Xiao-ling.Regressive Anaylsis of The Effect of Precipitation on Yield of Pasture at High and Cold Area Tongde County[J].Animal Husbandry and Feed Science,2010,31(1):83-85. |
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| Authors: | LIU Jian-xia WANG Jun HU Xiao-ling |
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| Institution: | 1.Weather Service of Tongde County of Qinghai Province/a>;Tongde 813200/a>;China/a>;2. Disaster Prevention Central of Qinghai Province/a>;Xining 810001/a>;China |
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| Abstract: | According to basic theory for integral regressive, the relation between meteorology factor and yield of pasture was analyzed, the aim was to clarity the effect of precipitation on yield of pasture at different procreation stage at high and cold area. The result showed that the positive relation effect is at the stage of earily-mid in April, from late in May to earily in July and late in August.When the amount of precipitation increased 1 mm, the yield of pasture at most increased 138.2,80.1,53.8 kg/hm2. But... |
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| Keywords: | grassland at high and cold area yield of pasture precipitation regressive anaylsis |
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