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| 不同割草频次对松嫩平原羊草草地生产量的影响 | |
| 引用本文： | 李红,郭继勋,徐爱春,薛丰刚,李萌.不同割草频次对松嫩平原羊草草地生产量的影响[J].东北师大学报(自然科学版),2000,32(3):53-57. |
| 作者姓名： | 李红 郭继勋 徐爱春 薛丰刚 李萌 |
| 作者单位： | 1. 东北师范大学草地研究所,吉林,长春,130024 2. 吉林省牧业管理局,吉林,长春,130051 3. 吉林省草原管理总站,吉林,长春,130062 |
| 基金项目： | 吉林省科委重大项目!( 960 4 0 3 -1 ) |
| 摘 要： | 当年的１次割草处理，可使草地生产量提高９％，３次割草处理使总生产量降低１１．４％。连续两年割草处理使草地生产量下降约５０％。割草频次增加，草地实际收获量减少，各割草频次下，均以初次割草的收获量占总收获量的比重最大。割草处理对次年返青后群落中羊草生长不利，对糙隐子草和芦苇的分蘖有促进作用，１次和２次割草处理影响的差异较小，３次割草的影响作用明显。各割草频次均使草地枯枝落叶的积累量明显减少，１次割草的 |
| 关 键 词： | 割草频次 生产量 收获量 羊草草地 松嫩平原 |
| 文章编号： | 1000-1832(2000)03-0053-05 |
| 修稿时间： | 2000-05-16 |
Effect of different clipping number on Leymus chinensis grassland in the Songnen plain of China. |
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| LI Hong,GUO Ji-xun,XU Ai-chun,XUE Feng-gang,LI Meng.Effect of different clipping number on Leymus chinensis grassland in the Songnen plain of China.[J].Journal of Northeast Normal University (Natural Science Edition),2000,32(3):53-57. | |
| Authors: | LI Hong GUO Ji-xun XU Ai-chun XUE Feng-gang LI Meng |
| Institution: | LI Hong ,GUO Ji-xuni ,XU Al-chun (Institute of Grassland Science, Northeast Normal University, Changchun 130024, China)XUE Feng-gang (Animal Husbandry Management Bureau of Jilin Province, Changchun 130051, China)LI Meng (Grasslands Management General Station of Jilin Province, Changchun 130062, China) |
| Abstract: | The biomass of grassland is increased 9% for clipping once in a year, and decreased 11.4% for three times. Clipping for tow years running, the biomass is decreased about half. Harvesting of grassland reduced with the increase of clipping number. The first harvesting alwasy takes the biggest percentage in the whole year harvesting at the different clipping number. Clipping is disadvanced to the growth of Leymus chinensis in next year, and promotes the tillering of Cleistogenes squarrosa and Phragmites communis . Once and twice clipping make no different influences, and three times clipping has significant effects. The accumulations of litter in grassland are significantly decreased because of clipping. If once clipping are done very lately, the accumulations of litter would be prevented. |
| Keywords: | clipping number biomass harvesting litter accumulations Leymus chinensis grassland |
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