叶面喷施麦根酸铁对矫正果树缺铁黄叶病效果的初探

Study the Effect of Foliar Application of FePS on Correcting Iron Deficient Chlorosis on Fruit Trees

本文在苹果和桃树上,以CK、FeEDTA、BASF多元微肥和柠檬酸复合铁(FCU)为对比,探讨了叶面喷施麦根酸铁(FePS)对矫正苹果和桃树缺铁黄叶病的效果.研究表明,桃树和苹果叶绿素含量在叶面喷施时间达2～3个月以前FePS处理小于FCU和FeEDTA处理,在施用时间2～3个月以后FePS处理大于FCU和FeEDTA处理.叶面喷铁桃树叶片全铁含量在施用时间达2个月以前以FeEDTA最高,在施用时间达2个月以后以FePS最高;而在苹果上喷施FePS叶片全铁含量仅大于BASF喷施,小于FCU和FeEDTA处理.叶面喷施FePS,桃树和苹果叶片活性铁含量变化与全铁变化相同,桃树上在施用时间达2个月以前以FeEDTA最大,在施用时间达2个月以后以FePS最大;在苹果上则喷施FePS叶片活性铁仅大于BASF处理,低于FCU和FeEDTA处理.

This research is conducted to study the effect of foliar application of FePS on correcting of iron deficient chlorosis of apple and peach trees in comparison with Ck, FeEDTA , FCU and BASF . The results showed that the chlorophyll content in peach and apple trees sprayed with FePS was lower than that of FeEDTA . FCU and BASF treatment when applied less than two or three months , yet FePS application was the highest two or three months later. The concentration of total iron sprayed with FeEDTA was the highest in peach tree when applied less than two months ,yet two months later FePS was the highest ;however FePS treatment was only higher than BASF application, lower than FCU and FeEDTA application in apple trees. The concentration of active iron of peach and apple trees were the same as total iron, which FeEDTA was the largest when applied less than two months and FePS was the largest two months later in peach tree, and FePS was higher than BASF and lower than FCU and FeEDTA in apple trees.