CAJ | 학술논문

以周麦23为供试材料，采用裂区设计的大田试验研究了关中地区秸秆还田配施不同氮肥水平对冬小麦产量及氮素调控的影响。结果表明：相较于单施氮肥处理，秸秆还田配施氮肥处理冬小麦产量在低施氮量处理时有降低的趋势，在高施氮量处理时有增加的趋势，但两者间的差异不显著；秸秆还田配施氮肥能有效提高冬小麦的氮素利用效率，冬小麦的氮肥表观利用率提高了1．6％～9．1％；秸秆还田措施配施适量的氮肥有降低冬小麦百公斤籽粒需氮量的趋势。综合考虑到生产成本及潜在环境污染的可能性因素，在秸秆还田条件下，试验地区冬小麦施氮量以252～321 kg·hm-2为宜。
이주맥23위공시재료，채용렬구설계적대전시험연구료관중지구갈간환전배시불동담비수평대동소맥산량급담소조공적영향。결과표명：상교우단시담비처리，갈간환전배시담비처리동소맥산량재저시담량처리시유강저적추세，재고시담량처리시유증가적추세，단량자간적차이불현저；갈간환전배시담비능유효제고동소맥적담소이용효솔，동소맥적담비표관이용솔제고료1．6％～9．1％；갈간환전조시배시괄량적담비유강저동소맥백공근자립수담량적추세。종합고필도생산성본급잠재배경오염적가능성인소，재갈간환전조건하，시험지구동소맥시담량이252～321 kg·hm-2위의。
Using the wheat cultivar Zhoumai 23 as material ,there were 10 treatments that were coded as N0 ,N84 , NI68 ,N252 and N336 (standing for single nitrogen fertilizer at 0 ,84 ,168 ,252 kg·hm-2 and 336 kg·hm-2 ,respec-tively) ,and S+N0 ,S+N84 ,S+NI68 ,S+N252 and S+N336 (standing for 5 500 kg·hm-2 straw returning com-bined with nitrogen fertilizer at the rates as above ) .The results showed that ,compared with the single N treatments ,the yield of wheat under S+N treatments showed a trend of decrease ,but the difference between them was insignificant sta-tistically .Nitrogen fertilizer use efficiency under S+N treatments was 1 .6% ~9 .1% higher than that of N treatments . Straw returning combined with an appropriate amount of nitrogen fertilizer tended to decrease N-requirement per 100 kg grain .In conclusion ,straw returning combined with nitrogen fertilizer application produced positive effects on wheat pro-duction ,and 252~321 kg·hm-2 was a suitable rate of nitrogen application for winter wheat in the experimental area .