冀西北地区适宜不同地力条件的青贮玉米品种筛选

根据冀西北地区的农业生态特点,以玉米品种农大108为对照,2010年对引进的4个青贮玉米新品种（曲辰9号、辽单青贮625、田丰88和桑草1号）进行旱地和水浇地2种地力条件下的产量和品质比较试验,旨为筛选出适宜该区域种植的青贮玉米品种。结果表明：田丰88在旱地条件下的干物质产量达8 900.4 kg/hm2,较对照增产34.8%,差异达极显著水平;粗蛋白含量为9.21%,也极显著高于对照。田丰88抗逆性最强,最适宜在冀西北地区旱瘠薄地种植。曲辰9号和辽单青贮625在水浇地条件下的干物质产量分别达18 800.9 kg/hm2和18 600.9 kg/hm2,分别较对照增产23.7%和22.4%,差异均达到极显著水平;粗蛋白含量分别为11.25%和10.97%,也极显著高于对照,2个品种均可在土质肥沃的高水肥条件下种植,其中曲辰9号适应性更强。

Screening of Silage Maize Varieties Suitable for Different Soil Fertilty Conditions in Northwest Hebei

Based on the characters of agro-ecology in Northwest Hebei,using Nongda 108 as the check variety,four introduced silage maize varieties were compared at dry land and irrigated land in order to screen the suitable ones.The results showed that the dry matter yield of Tianfeng 88 was 8 900.4 kg/hm2,which increased by 34.8% at dry field,and the crude protein content was 9.21%,which was significantly higher than that of the control.Tianfeng 88 had high stress resistance,which was suitable for planting at dry and barren land.The dry matter yield of Quchen No.9 and Liaodanqingzhu 625 was 18 800.9 kg/hm2 and 18 600.9 kg/hm2,respectively,which increased by 23.7% and 22.4%,respectively.And the crude protein content of the two varieties was 11.25% and 10.97%,respectively,which was significantly higher than that of the control.The two varieties could be planted at irrigated land,and the adaptability of Quchen No.9 was higer.