CAJ | 학술논문

为明确农田土壤矿质氮（Nmin）含量对马铃薯块茎形成的影响，在内蒙古阴山北麓马铃薯主产区大田条件下，利用主栽马铃薯品种‘克新1号’，通过设置不同供氮水平，研究了薯田土壤Nmin含量对块茎形成的时间、数量以及重量的影响。结果表明：土壤Nmin含量在18～50 mg/kg范围内时均可形成块茎，且在18.64～19.94 mg/kg可较早形成块茎，超过50.57 mg/kg时，不形成块茎；较高的土壤Nmin含量会降低块茎形成的数量，在内蒙古阴山北麓地区，马铃薯出苗39 d以后，块茎数量不再增加；虽土壤Nmin含量的增加推迟了块茎的形成时间，但较高的土壤Nmin有利于马铃薯生育后期单株块茎重量的增加。
위명학농전토양광질담（Nmin）함량대마령서괴경형성적영향，재내몽고음산북록마령서주산구대전조건하，이용주재마령서품충‘극신1호’，통과설치불동공담수평，연구료서전토양Nmin함량대괴경형성적시간、수량이급중량적영향。결과표명：토양Nmin함량재18～50 mg/kg범위내시균가형성괴경，차재18.64～19.94 mg/kg가교조형성괴경，초과50.57 mg/kg시，불형성괴경；교고적토양Nmin함량회강저괴경형성적수량，재내몽고음산북록지구，마령서출묘39 d이후，괴경수량불재증가；수토양Nmin함량적증가추지료괴경적형성시간，단교고적토양Nmin유리우마령서생육후기단주괴경중량적증가。
In order to test the influence of soil mineral nitrogen (Nm in) content on potato tuber formation, a field trial was conducted in Yinshan mountain, with potato cultivar 'Kexin 1' by setting different nitrogen levels. Field soil Nmin content, tuber formation time, tuber number and weight per plant were measured or recorded dynamical y. The results showed that soil Nmin declined with potato development. The soil Nmin content in a range of 18-50 mg/kg benefited tuber formation, and the soil Nmin in 18.64-19.94 mg/kg was the best level for early tuber formation. When it was more than 50.57 mg/kg, tubers could not form. It also revealed that the higher soil Nmin content could reduce the number of tuber formation, and 39 days after emergence in Yinshan area tuber number would not increase any more. Although increased soil Nmin postponed the tuber formation, the potato tuber weight per plant increased with soil Nmin.