包膜控释尿素对马铃薯生长发育及产量的影响  

Effects of Controlled-release Coated Urea on Potato Growth and Yield

作　　者：魏玉琴 姜振宏 陈富 张小静 

机构地区：[1]定西市农业科学研究院,甘肃定西743000

出　　处：《中国马铃薯》2015年第4期219-221,共3页Chinese Potato Journal

基　　金：国家科技支撑计划项目"西北区马铃薯节水高效关键技术研究与示范"(2012BAD06B00);国家马铃薯产业技术体系定西综合试验站(CARS-10-ES27)

摘　　要：试验开展了包膜控释尿素对马铃薯生育期株高、主茎数、茎粗、叶面积指数、叶绿素含量、单株结薯数、单株产量、商品薯率和产量的影响研究。结果表明,与施用普通尿素相比,包膜控释尿素施用量为普通尿素的80%时,在所有调查指标方面均表现最好,且商品薯率达到87.3%,折合产量为2 646 kg/667m2,较不施氮肥增产33.4%,较普通氮肥增产8.7%。The effects of control ed-release coated urea on plant height, main stem number, stem diameter, leaf area index, chlorophyl content of potato, tuber number per plant, tuber yield per plant, marketable tuber rate, and tuber yield were studied. The results showed that the treatment with control ed-release coated urea, applied at the rate of 80%of the treatment with regular urea, had the best results in al the traits tested, with the marketable tuber rate being 87.3%, and yield 2 646 kg/667m2, which was 33.4%more than no nitrogen fertilizer application and 8.7%more than regular urea.

关 键 词：包膜控释尿素 马铃薯 生长发育 产量 

分 类 号：S532[农业科学—作物学]