冬麦北移河西后生长发育及农艺性状比较研究

Comparative Studied on Growth,Development and Agronomic Characters of Winter Wheat Planted in Northern Region Hexi

不同冬小麦品种在北移区(武威)和原种植区(清水)两地生长发育差异比较研究,结果表明,冬麦北移河西后生育期表现为冬前生长期延长,越冬期延长,拔节至抽穗期缩短,抽穗至成熟期也缩短。农艺性状比较结果表明,冬麦北移河西后,株高降低,单株成穗数增多,并且主穗与分蘖穗的差异缩小,千粒重提高,主穗穗粒数减少,单株生物产量、单株籽粒产量和经济系数等均明显提高。若加强北移区小麦生长后期的田间管理,延长灌浆时间,提高粒重,产量可进一步提高。

The growth and developing difference of winter wheat varieties were studied at Wuwei（northem）and Qingshui （original region）. Result showed, in before over-winter, the period of growth lengthened, the period of over-winter lengthened, the period of joint to head shorted, the period of head to maturity shorted greatly. Comparative study on agronomic characters result showed,plant height reduced, the number of spike per plant increased, difference of main spike and tillers spike decreased ,kernel weight raised,the number of grains of main spike decreased, biological yield per plant, grain yield per plant and economic coefficient raised greatly. If management of growth later period was strengthened, extend grain filling period, raised kernel weight, yield may be raised again in Hexi.