施肥对羊草割草地牧草产量及品质的影响
发布时间：2019-07-03 17:12
【摘要】：以呼伦贝尔羊草割草地为对象,采用正交试验设计,研究了不同水平的氮磷钾配施对该地区牧草产量和品质的影响。结果表明:(1)CH6(N3P3K3)产量最高(3579.73kg/hm2),显著高于CK(P0.05)。该地区施肥量的最优组合为氮肥(181.96kg/hm2)+磷肥(321.84kg/hm2)+钾肥(47.01kg/hm2)。(2)牧草营养物质含量对不同施肥配比的响应不同,牧草的粗蛋白质含量CH3(N2P3K3)组合最优;粗脂肪含量的最优组合为CH13(N2P3K2);CH14(N3P2K2)、CH13(N3P2K2)分别是酸性洗涤纤维、中性洗涤纤维含量最优组合。(3)牧草营养物质含量对不同N、P、K施肥水平的响应不同,牧草粗蛋白质质含量和粗脂肪含量分别在N4和K2水平显著高于其他水平,酸性洗涤纤维在P2水平显著低于其他水平,牧草品质最优组合为N4P2K2。综合牧草产量、品质,呼伦贝尔天然割草地进行配方施肥时应保持N肥、P肥用量,减少K肥用量。
[Abstract]:Taking the mowing grassland of Leymus chinensis in Hulunbeier as the object, the effects of different levels of nitrogen, phosphorus and potassium on the yield and quality of herbage in this area were studied by orthogonal design. The results showed that: (1) the yield of CH6 (N3P3K3) was the highest (3579.73kg/hm2), which was significantly higher than that of CK (P 0.05). The optimal combination of nitrogen fertilizer (181.96kg/hm2) phosphate fertilizer (321.84kg/hm2) potassium fertilizer (47.01kg/hm2). (2) forage nutrition content was different, the crude protein content CH3 (N2P3K3) combination was the best, the crude fat content was CH13 (N2P3K2), and the crude protein content (N2P3K3) combination was the best. CH14 (N3P2K2) and CH13 (N3P2K2) were the best combinations of acid detergent fiber and neutral detergent fiber content, respectively. (3) the response of forage nutrient content to different N and K application levels was different. The crude protein content and crude fat content of forage grass were significantly higher than those of other levels at N4 and K2 levels, respectively. The acid detergent fiber level at P2 level was significantly lower than that of other levels, and the optimal forage quality combination was N4P2K2. According to the yield and quality of forage, the amount of N fertilizer and P fertilizer should be kept and the amount of K fertilizer should be reduced when Hulunbeir natural mowing grassland was fertilized by formula.
【作者单位】： 内蒙古农业大学草原与资源环境学院;中国农业科学院农业资源与农业区划研究所;呼伦贝尔学院生命科学与化学学院;中国农业科学院草原研究所/农业部草地生态与修复重点实验室;
【基金】：国家公益性行业(农业)科研专项“半干旱牧区天然打草场培育与利用技术研究与示范”项目(2013060) 呼伦贝尔退化草甸草原综合治理技术与模式项目(2016YFC0500603)
【分类号】：S812.4
[Abstract]:Taking the mowing grassland of Leymus chinensis in Hulunbeier as the object, the effects of different levels of nitrogen, phosphorus and potassium on the yield and quality of herbage in this area were studied by orthogonal design. The results showed that: (1) the yield of CH6 (N3P3K3) was the highest (3579.73kg/hm2), which was significantly higher than that of CK (P 0.05). The optimal combination of nitrogen fertilizer (181.96kg/hm2) phosphate fertilizer (321.84kg/hm2) potassium fertilizer (47.01kg/hm2). (2) forage nutrition content was different, the crude protein content CH3 (N2P3K3) combination was the best, the crude fat content was CH13 (N2P3K2), and the crude protein content (N2P3K3) combination was the best. CH14 (N3P2K2) and CH13 (N3P2K2) were the best combinations of acid detergent fiber and neutral detergent fiber content, respectively. (3) the response of forage nutrient content to different N and K application levels was different. The crude protein content and crude fat content of forage grass were significantly higher than those of other levels at N4 and K2 levels, respectively. The acid detergent fiber level at P2 level was significantly lower than that of other levels, and the optimal forage quality combination was N4P2K2. According to the yield and quality of forage, the amount of N fertilizer and P fertilizer should be kept and the amount of K fertilizer should be reduced when Hulunbeir natural mowing grassland was fertilized by formula.
【作者单位】： 内蒙古农业大学草原与资源环境学院;中国农业科学院农业资源与农业区划研究所;呼伦贝尔学院生命科学与化学学院;中国农业科学院草原研究所/农业部草地生态与修复重点实验室;
【基金】：国家公益性行业(农业)科研专项“半干旱牧区天然打草场培育与利用技术研究与示范”项目(2013060) 呼伦贝尔退化草甸草原综合治理技术与模式项目(2016YFC0500603)
【分类号】：S812.4
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相关期刊论文 前10条
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2 曹文侠;李文;李小龙;徐长林;师尚礼;韩天虎;;施氮对高寒草甸草原植物群落和土壤养分的影响[J];中国沙漠;2015年03期
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