石漠化旱地施用改良剂对黑麦草生长的影响  

Influence of applying improvers on growth of perennial ryegrass in rocky desertification land

作　　者：张雷一 张耀[2] 张静茹[1,2] 向仰州 刘方[2] 姚斌[1] 

机构地区：[1]中国林业科学研究院荒漠化研究所,北京100091 [2]贵州大学资源与环境工程学院,贵州贵阳550025 [3]贵州省林业调查规划院,贵州贵阳550003

出　　处：《草业科学》2015年第3期450-457,共8页Pratacultural Science

基　　金：国家林业局"948"项目(2013-4-80);国家自然科学基金项目(31460133);林业公益性行业科研专项(201104077)

摘　　要：为研究石漠化区旱地施用改良剂对多年生黑麦草(Lolium perenne)生长、返青及增产效果的影响,进行外源添加牛粪炭、蚯蚓粪、保水剂、长效有机复合肥和秸秆粉等改良剂的盆栽试验。结果表明,出苗生长期,与对照比较,施用蚯蚓粪处理的黑麦草出苗时间缩短50.00%,出苗率和分蘖数(60 d)分别提高了46.24%和46.34%,且都优于其他改良剂处理。添加复合肥对黑麦草的株高和单株鲜重增加量最大。返青恢复生长期,添加秸秆粉处理的返青时间、株高、鲜重和分蘖数等指标表现最好。本研究得出,施用不同改良剂对黑麦草生长适应性的提高效果为蚯蚓粪>复合肥、牛粪炭、保水剂>CK>秸秆粉,返青恢复性为秸秆粉>复合肥、蚯蚓粪、保水剂>CK>牛粪炭。因此,施加改良剂可促进多年生黑麦草生长。In order to explore the influence of soil improvers on the growth,turning green and yield of perennial ryegrass in rocky desertification land,the pot experiment was conducted with exogenous cattle manure carbon,wormcast,water retaining agent,longterm organic compound fertilizer,straw powder,and so on.With application of wormcast,seedling emergence time reduced by 50.00%,seedling emergence rate and tiller number( 60 d) increased by 46.24% and 46.34%,respectively,compared with the treatments without using soil improvers.This treatment was better than the treatments with other soil improvers applications.The increase of plant height and fresh weight of perennial ryegrass were the highest with the application of compound fertilizer.The turning green recovery time,plant height,fresh weight and tiller number of the treatment with straw power were the best during the turning green recovery period.In conclusion,the improving effects of different improvers on ryegrass growth decreased in the following order: wormcast > compound fertilizer,cow dung carbon,water retaining agent > CK >straw power.The improving effects of different improvers on turning green recovery decreased in the following order: straw powder > compound fertilizer,wormcast,water-retaining agent > CK > cow dung carbon.These results suggested that the optimum soil improvers can promote the growth of perennial ryegrass.

关 键 词：改良剂 多年生黑麦草 生长状况 

分 类 号：S156.92[农业科学—土壤学] S543.6[农业科学—农业基础科学]