干旱地区农业研究Issue(3)：72-78,7.DOI:10.7606/j.issn.1000-7601.2015.03.12
不同锌肥对旱作马铃薯植株锌的吸收、积累与分配的影响
Effects of different kinds of zinc fertilizers on zinc absorption, accumulation and distribution of potato under rainfed conditions
摘要
Abstract
A field experiment was conducted to examine the effects of different kinds of zinc fertilizers (inorganic zinc sulfate and organic chelated zinc sugar alcohols ) on the absorption ,accumulation and distribution of Zn ,and the tu-ber yield of“Xin Da Ping”potato plants .The results showed that 35 days after the emergence ,obvious variations in zinc concentrations could be observed in all organs of potato plants .Three sprays during the growth period could significantly increase zinc concentrations and accumulations in various organs ,displaying the highest growth rate in leaves .Zinc sul-fate treatment (T2 ) and sugar alcohol treatment (T3 ) of zinc concentration in leaves reached the maximums 85 days and 75 days after emergence ,respectively .85 days after emergence ,zinc concentrations in leaves with T2 and T3 treatments were increased by 47 .88 mg·kg-1 and 72 .24 mg·kg-1 ,respectively ,and that with T3 was 24 .36 kg·mg-1 higher than that with T2 .Till the end of tuber growth ,zinc accumulations in leaves by T2 and T3 treatments were increased 1 .5 times and 4 times as much as that by T1 ,and zinc accumulations in the tubers were increased by 37 .5% and 49 .4%more than that by T1 .Applications of zinc fertilizer by increasing zinc concentrations in leaves of potato promoted photo-synthesis ,and consequently helped the growth and development of other organs ,ultimately improving the yield of tubers and yield of zinc .Tuber yields by T2 and T3 were increased by 10 .6% and 22 .5% more than that by T1 ,resulting in increases of zinc production by 26 .9% and 46% ,respectively .The technique“applying zinc fertilizer seed dressing and spraying”improved the ratio of zinc distribution in root and stem leaf ,and reduced the distribution ratio of zinc to tuber . Application of zinc fertilizer increased the transfer coefficient from the ground organs to the underground organs .Potato seed and leaf showed better absorption of small molecules of organic chelated zinc fertilizer sugar alcohol zinc than inor-ganic zinc sulfate zinc .关键词
锌肥/马铃薯/锌浓度/锌积累量/分配Key words
zinc fertilizer/potato/zinc concentration/zinc accumulation/distribution分类
农业科技引用本文复制引用
孙小龙,王延明,张春红,张俊莲,邱慧珍,王蒂,李德明..不同锌肥对旱作马铃薯植株锌的吸收、积累与分配的影响[J].干旱地区农业研究,2015,(3):72-78,7.基金项目
马铃薯产业技术体系项目（CARS －10－ P18）；甘肃省科技支撑计划项目（1011NKCA070）；甘肃省科技重大专项（1102NKDA025）；国家科技支撑计划 （）
