CAJ | 학술논문

为适时精确诊断赣花7号的氮素营养状况,通过设置6个氮素水平(施纯氮0、75、150、225、300、375 kg/hm2),在不同时期(出苗后30、45、60、75和90 d)分别测定花生不同叶位(主茎倒一完全叶、倒二完全叶和倒三完全叶)的SPAD值和相应叶位叶片的含氮量,分析其施氮水平、SPAD值和叶片含氮量之间的关系,并进行方程的拟合。结果显示：施氮水平与SPAD值、叶片含氮量之间呈显著的指数相关,SPAD值和叶片含氮量之间呈显著的线性相关,并且在各叶位中,以主茎倒3叶的相关性最好,其可作为氮素诊断的理想叶位。
위괄시정학진단공화7호적담소영양상황,통과설치6개담소수평(시순담0、75、150、225、300、375 kg/hm2),재불동시기(출묘후30、45、60、75화90 d)분별측정화생불동협위(주경도일완전협、도이완전협화도삼완전협)적SPAD치화상응협위협편적함담량,분석기시담수평、SPAD치화협편함담량지간적관계,병진행방정적의합。결과현시：시담수평여SPAD치、협편함담량지간정현저적지수상관,SPAD치화협편함담량지간정현저적선성상관,병차재각협위중,이주경도3협적상관성최호,기가작위담소진단적이상협위。
In order to timely and accurate diagnosis nitrogen status of Ganhua No. 7, an experiment was conducted under six different nitrogen levels (0, 75, 150, 225, 300, 375 kg/hm2), and SPAD value and N content of peanut leaves from different positions were measured at five different stages (after seeding 30, 45, 60, 75 and 90 d) were determined, and the relationship between nitrogen level, SPAD value and leaf nitrogen content was analyzed. The results showed that:the relationship between nitrogen application rate and SPAD value and leaf nitrogen content was significantly index-related, while relationship between SPAD values and leaf nitrogen content was significant linear-related. The clearest relationship existed in the third complete leaf from the top, so it could be used as the optimal leaf in nitrogen nutrition diagnosis.