叶面喷施铁肥对马铃薯农艺、产量及品质性状的影响研究

Effect of Foliar Application of Iron Fertilizer on Agronomic,Yield and Quality Characters of Potato

为探索叶面喷施铁肥对马铃薯农艺、产量及品质性状的影响,找出生产过程中铁肥施用方法,切实提高榆林地区马铃薯的产量和质量,本试验选用“希森6号”脱毒原种为材料,设置4个铁肥梯度,分别在苗期、现蕾期、膨大期进行叶面喷施。结果表明,随着叶面喷施铁肥浓度逐渐升高,单株块茎数是在浓度0~0.10%先增大,在浓度0.10%~0.15%后保持不变,株高、干物质含量和粗蛋白含量呈现逐渐增加的趋势,单株块茎重、商品率、产量、VC含量和还原糖含量均呈现先增大后减少的趋势,说明喷施一定浓度的铁肥对马铃薯生长具有促进作用。总体来看,叶面喷施0.10%浓度的螯合铁,马铃薯综合指标表现最好,产量最高。

In order to explore the effects of iron fertilizer spraying on potato leaves on agronomy,yield and quality traits,find out the application methods of iron fertilizer in the production process,and effectively improve the yield and quality of potato in Yulin area,this experiment selected"XISEN 6"virus-free original seed as material,set up four iron fertilizer gradients,and sprayed on the leaves at seedling stage,budding stage and expansion stage respectively.The results showed that as the concentration of iron fertilizer sprayed on the leaves gradually increased,the number of tubers per plant first increased at the concentration of 0 to 0.10%,and then remained unchanged at the concentration of 0.10%to 0.15%,the plant height,dry matter content and crude protein content showed a gradual increase trend,and the weight,commodity rate,yield VC content and reducing sugar content of tubers per plant showed a trend of first increase and then decrease,indicating that spraying a certain concentration of iron fertilizer can promote the growth of potato.In general,0.1%concentration of chelated iron sprayed on the leaves,the comprehensive indicators of potato performed best and the yield was the highest.