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小麦新品种衡4399由河北省农林科学院旱作农业研究所选育而成。2009~2010年对其进行水肥高效模式研究,试验春季水肥管理模式设拔节水+开花水、拔节水、孕穗水、起身水+开花水+灌浆水(CK)4种,通过比较不同水肥管理模式下的小麦水分利用特性、产量及相关因素,确定衡4399适宜的水肥高效模式。结果表明:在试验年度极端低温气候情况下,4种水肥管理模式的衡4399水分利用效率达1.88~2.06 kg/m~3,且产量均>7 500 kg/hm~2,衡4399为节水高产型品种。其中,春浇2水(拔节水+开花水)可以延长小麦灌浆期,提高叶面积指数和水分利用效率,产量达9 000 kg/hm~2左右,且极显著>其他水肥模式处理。适宜衡4399高产的最佳高效水肥模式为春浇拔节水和开花水。
The new variety of wheat 4399 was selected from the Institute of Dry Farming, Hebei Academy of Agriculture and Forestry. From 2009 to 2010, the water and fertilizer efficiency model was studied. The spring and summer water and fertilizer management models were 4 types of water-saving, flowering, jointing, booting, uplifting + flowering + grouting (CK) Under the water use characteristics of wheat, yield and related factors to determine the appropriate water and fertilizer Hengshui efficient mode. The results showed that the water use efficiency of Heng 4399 was 1.88 ~ 2.06 kg / m ~ 3 and the yield was> 7 500 kg / hm ~ 2 under the four types of water and fertilizer management under the extremely cold climate conditions in the experimental year. High-yield varieties. Among them, spring 2 irrigation (jointing + flowering) can prolong the grain filling stage, increase the leaf area index and water use efficiency, and the yield is up to 9 000 kg / hm ~ 2, which is extremely significant> other water and fertilizer treatments. Appropriate balance 4399 The best high yield and efficiency of water and fertilizer for the spring and water and draw water.