CAJ | 학술논문

采用箱栽和田间试验相结合的方法，研究了断根深度对花生叶片氮代谢特性及产量的影响。结果表明：各断根深度在断根后初期（5～10d）均造成叶片含氮量、氮积累量、可溶性蛋白质含量和硝酸还原酶活性降低，并随着断根深度的增加降低幅度增大；10～15d 之后则随着断根深度的增加呈升高的趋势，以断根深度15cm 处理的叶片含氮量、氮积累量、可溶性蛋白质含量和硝酸还原酶活性最高。适度断根处理（10～15cm）显著提高花生产量、有效果数和百果重。过度断根处理的叶片含氮量、氮积累量、可溶性蛋白质含量和硝酸还原酶活性则一直低于对照处理。表明适度断根处理短时间内降低了花生叶片氮代谢水平，但之后能够延缓花生叶片氮代谢水平的下降速度，保持生育后期叶片具有较高的氮代谢水平，增加生物产量、荚果产量、有效果数和百果重。花生的适宜断根深度为10～15cm。
채용상재화전간시험상결합적방법，연구료단근심도대화생협편담대사특성급산량적영향。결과표명：각단근심도재단근후초기（5～10d）균조성협편함담량、담적루량、가용성단백질함량화초산환원매활성강저，병수착단근심도적증가강저폭도증대；10～15d 지후칙수착단근심도적증가정승고적추세，이단근심도15cm 처리적협편함담량、담적루량、가용성단백질함량화초산환원매활성최고。괄도단근처리（10～15cm）현저제고화생산량、유효과수화백과중。과도단근처리적협편함담량、담적루량、가용성단백질함량화초산환원매활성칙일직저우대조처리。표명괄도단근처리단시간내강저료화생협편담대사수평，단지후능구연완화생협편담대사수평적하강속도，보지생육후기협편구유교고적담대사수평，증가생물산량、협과산량、유효과수화백과중。화생적괄의단근심도위10～15cm。
Effect of root cutting levels on leaves nitrogen(N)metabolism and peanut yield were investigated in filed and box culture in 2012 - 2013. Results showed that,N content,N accumulation,soluble protein content and nitrate reductase activity of leaves decreased early after root cutting. The decrease was accelerated by root cut-ting depths. After 10d to 15d,the above index began to increase gradually especially in the level of 15cm,al-though they were still lower than that of control. Moderate root - cutting(10 - 15cm)resulted in significantly high-er biological and pod yield,as well as significantly higher valid pods and 100 - pod weight. It indicated that root -cutting affected N metabolism only in a short period of time,and delayed its declining during late growth stages. This research suggested that moderate depth of root - cutting was between 10 cm to 15 cm.