饲草型小黑麦新品系在甘肃临洮灌区的生产性能研究

摘要

In order to screen excellent Triticale ,the productivities of 10 new triticale lines were studied in ir-rigation area in Lintao of Gansu province were studied by using the grey relation analyzed the parameters inclu-ding the plant height,number of branches,hay yield and nutrition contents(crude protein,acid detergent fiber, neutral detergent fiber).The results showed that the highest plant height was obtained in P7,which had signifi-cant difference with Shida No.1(CK1),Zhongsi 1048(CK2)and other lines;P1 had the largest branch number, which had significant difference with CK1,CK2 and other lines except P13 and P22;the highest hay yield was obtained in P13,which had significant difference with CK1,CK2 and other lines except P22.Plant height was negatively correlated with the branch number and the branch number was positively correlated with hay yield. P1 had the highest CP content and it had significant difference with CK1,CK2 and the other lines;the lowest ADF content was occurred in P24 and it had significant difference with CK1,CK2 and the other lines;P24 had the lowest NDF content and it had significant difference with CK1,CK2 and the other lines.Comprehensive e-valuation results showed that triticale lines P1,P13,P22,P29 and P39 were better than Shida No.1 (CK1 )and Zhongsi1048(CK2).%通过研究10个饲草型小黑麦新品系的株高、枝条数、干草产量和营养价值(粗蛋白、酸性洗涤纤维、中性洗涤纤维),并应用灰色关联分析进行综合评价,以系统了解其在甘肃省临洮灌区的生产性能。结果表明：小黑麦品系中 P7的株高最高为156 cm,与石大1号(CK1)、中饲1048(CK2)和其他品系均有显著差异(P <0.05)；P1的枝条数最多,达1050.67万/hm2,除与 P13和 P22无显著差异外,与CK1,CK2和其他品系均有显著差异；P13的干草产量最高,为19.50 t/hm2,除与 P22无显著差异外,与CK1,CK2和其他品系间均有显著差异；小黑麦品系的株高与枝条数呈极显著负相关,枝条数与干草产量呈显著正相关。P1的粗蛋白含量最高,与 CK1,CK2和其他品系有显著差异；P24的酸性洗涤纤维含量最低,与 CK1,CK2和其他品系有显著差异；中性洗涤纤维含量最低的品系为 P24,与 CK1,CK2和其他品系均有显著差异。综合评价结果表明：小黑麦品系 P1、P13、P22、P29和 P39的综合性状优于国家小黑麦区域试验对照品种 CK1和 CK2,应进一步进行区域试验和生产试验,审定登记小黑麦新品种。