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| 苏丹草-黑麦草轮作中氮磷钾配施对饲草产量与养分积累的影响 | |
| 引用本文： | 李文西,鲁剑巍,鲁君明,陈防,李小坤. 苏丹草-黑麦草轮作中氮磷钾配施对饲草产量与养分积累的影响[J]. 草原与草坪, 2009, 0(6): 5-10 |
| 作者姓名： | 李文西 鲁剑巍 鲁君明 陈防 李小坤 |
| 作者单位： | 1. 华中农业大学,资源与环境学院,湖北,武汉,430070 2. 湖北荆州市大同湖管理区农业服务中心,湖北,荆州,433221 3. 中国科学院武汉植物园,湖北,武汉,430074 |
| 基金项目： | 国际植物营养研究所(IPNI)国际合作项目 |
| 摘 要： | 在大田试验条件下采用“盐池”苏丹草（Sorghum sudanense cv．Yanchi）与“邦德”一年生黑麦草（Lolium mzdtiflorum vc．Abundant）轮作研究氮磷钾肥配合施用对饲草产量及养分积累的影响。结果表明：氮磷钾配施处理中（NPKN450kg／hm^2、P2O5 180kg／hm^2、K2O300kg／hm^2）的饲草鲜草产量在各处理中最高，两季合计达162．7t／hm^2；其中苏丹草鲜草产量为102．3t／hm^2，分别比不施肥（CK）、不施氮（PK）、不施磷（NK）和不施钾（NP）处理增产352．7％、356．7％、28．2％和13．9％；黑麦草鲜草产量为60．4t／hm^2，分别比CK、PK、NK和NP处理增产344．1％、255．3％、24．8％和25．3％。配施NPK处理，全生育期饲草干物质目均积累量为65．2kg／hm^2，分别比CK、PK、NK和NP处理高215．0％、197．5％、22．00．4和9．6％，苏丹草与黑麦草的干物质日均积累量分别为104．5kg／hm^2和36．9kg／hm^2。氮磷钾配施显著促进饲草的养分积累，全生育期的饲草N、P2O5和K2O积累量分别为500kg／hm^2、210kg／hm^2和1196kg／hm^2，同时，N、P2O5和K2O日均积累量分别为1．37kg／hm^2、0．58kg／hm^2和3．29kg／hm^2^2；其中苏丹草的日均积累量分别为2．12kg／hm^2、0．79kg／hm^2和4．16kg／hm^2；黑麦草的日均积累量分别为0．84kg／hm^2，0．43kg／hm^2和2．66kg／hm^2。 |
| 关 键 词： | 苏丹草-黑麦草轮作 氮磷钾配施 养分积累 日均积累量 江汉平原 |
Effect of NPK combination on forage yield and nutrient accumulation under sudangrass and ryegrass regime |
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| LI Wen-xi,LU Jian-wei,LU Jun-ming,LI Xiao-kun. Effect of NPK combination on forage yield and nutrient accumulation under sudangrass and ryegrass regime[J]. Grassland and Turf, 2009, 0(6): 5-10 | |
| Authors: | LI Wen-xi LU Jian-wei LU Jun-ming LI Xiao-kun |
| Affiliation: | LI Wen-xi1,LU Jian-wei1,LU Jun-ming2,LI Xiao-kun1(1.College of Resources , Environment,Huazhong Agricultural University,Wuhan 430070,China,2.Agricultural Service Center,Datonghu Administration District of Jingzhou City,Jingzhou 433221,3.Wuhan Botanical Garden,Chinese Academy of Sciences,Wuhan 430074,China) |
| Abstract: | The field trial was carried out to study the effect of NPK combination on forage yield and nutrient accumulation in sudangrass and ryegrass rotation.The results indicated that the total fresh matter yield of NPK combination were the highest(162.7t/hm2)among all treatments.In which,the fresh matter yield of sudangrass was 102.3 t/hm2,and it was 352.7%,356.7%,28.2% and 13.9% more than that of CK,PK,NK and NP treatments respectively.The fresh matter yield of ryegrass was 60.4 t/hm2,and it was 344.1%,255.3%,24.... |
| Keywords: | sudangrass and ryegrass rotation NPK combination nutrient accumulation average daily accumulation rate Jianghan Plain |
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