CAJ | 학술논문

为明确控释尿素与普通尿素配合施用在作物上的应用效果，以冬小麦为研究材料，在田间试验条件下研究了不同比例（0、10％、30％、50％、100％）的控释尿素（CRU，释放期60 d）与普通尿素配合追施（基追比为3∶7）对冬小麦旗叶叶绿素a含量和净光合速率、产量、氮肥利用率、分蘖情况以及经济效益的影响。结果表明：控释尿素比例为50％和100％处理的冬小麦叶绿素a和净光合速率在各生育期都保持了较高水平；与仅施用普通尿素相比，控释尿素为50％的处理的各项指标都明显提高，分蘖数自返青期起保持了较高水平，小麦产量增加了17.0％，氮肥利用率提高了16.73％，增收2587.23 yuan/hm2。综合分析，50％控释尿素的施肥处理在小麦上应用效果最好。
위명학공석뇨소여보통뇨소배합시용재작물상적응용효과，이동소맥위연구재료，재전간시험조건하연구료불동비례（0、10％、30％、50％、100％）적공석뇨소（CRU，석방기60 d）여보통뇨소배합추시（기추비위3∶7）대동소맥기협협록소a함량화정광합속솔、산량、담비이용솔、분얼정황이급경제효익적영향。결과표명：공석뇨소비례위50％화100％처리적동소맥협록소a화정광합속솔재각생육기도보지료교고수평；여부시용보통뇨소상비，공석뇨소위50％적처리적각항지표도명현제고，분얼수자반청기기보지료교고수평，소맥산량증가료17.0％，담비이용솔제고료16.73％，증수2587.23 yuan/hm2。종합분석，50％공석뇨소적시비처리재소맥상응용효과최호。
The mixing use of control-released urea ( CRU) and the common urea is an effective way in meeting the requirement of N nutrition and decreasing the N loss in agricultural practices .A field experiment was conducted to study effects of topdressing different ratios of controlled release urea (CRU, release period 60 d) (0, 10%, 30%, 50%, 100%) with common urea on winter wheat .The ratio of basal and topdressing N use proportion was set as 3∶7, and five mixing ratios were designed .The number of tillering , photosynthesis indices and grain yield were investigated , the nitrogen use efficiency and the economic benefit were calculated in the study .The results show that the net photosynthetic rates and the contents of chlorophyll with 50% and 100% of CRU are all significantly higher than those applying common urea alone , the yield is increased by 17%, the nitrogen use efficiency increased by 16.73%and the economic profit increased by 2587.23 yuan/ha in 50%CRU treatment.There are more tillers in wheat treated with 50%of CRU from the reviving stage of seedlings to the harvest stage .In conclusion , mixing ratio of 50% of CRU and 50% of common urea is recommended for higher yield and profit in winter wheat production .