广西植物2017，Vol.37Issue(9)：1137-1142,6.DOI:10.11931/guihaia.gxzw201608028
管道输液滴干对苹果缺铁失绿症的影响
Effects of pipeline trunk transfusion and drip on iron deficiency chlorosis of apple trees
摘要
Abstract
In order to explore the simple and labor-saving program of preventing iron deficiency chlorosis in fruit trees, we studied the effects of Fe-N solutions of different concentrations by pipeline transfusion and drip, contrasted by con-ventional management by determining the leaf SPAD value, hecto-leaf weight, hecto-leaf thickness, the content of total iron and active iron and so on. The results showed that the treatment of iron fertilizer pipeline transfusion significantly in-creased leaf SPAD value, hecto-leaf weight and hecto-leaf thickness, the content of total iron and active iron in leaves, while the chlorophyll fluorescence parameters also had a major impact. In addition, SPAD value and the content of active iron had a good linear relationship, and the correlation coefficient reached 0. 899 through analyzing different grades yellow leaves. This result suggested that there was certain reliability with SPAD value as the way of diagnosing iron defi-ciency in apple, and it also explained that the yellowing leaf was mainly caused by the shortage of iron. The SPAD val-ue, hecto-leaf weight, hecto-leaf thickness, the content of total iron and active iron in leaves were markedly improved by pipeline transfusing the solution of 16.4 × 10-3 mol·L-1, which were increased by 89.66%, 20.42%, 9.26%, 158.0%and 277.4% in the experiment, and the fluorescence parameters also reached the optimum level. The result showed that the technology of pipeline infusion dripping trunk significantly improved the index level of apple leaves, and the results laid the foundation for the application of pipeline trunk transfusion and drip in the prevention and treatment of iron defi-ciency chlorosis in apple.关键词
缺铁失绿症/Fe-N/管道输液滴干/苹果/指标Key words
iron deficiency chlorosis/Fe-N/pipeline trunk transfusion and drip/apple/index分类
农业科技引用本文复制引用
马幸幸,田自武,刘贵巧,刘子英,杨青芹,吕志果,薛进军..管道输液滴干对苹果缺铁失绿症的影响[J].广西植物,2017,37(9):1137-1142,6.基金项目
国家自然科学基金 (31572198) （31572198）
玉林市科学技术局项目 (玉科计字201538) [Supported by the National Natural Science Foundation of China (31572198) （玉科计字201538）
Program of Yulin Bureau of Science and Technology (201538)]. （201538）
