糖醇镁在水稻上施用效果比较试验初报

上杭县耕地土壤交换性镁含量普遍较低,其中低于50mg/kg的面积占比达到43.5%。为探讨糖醇镁与其他常用镁肥在水稻上应用比较效果,指导晚稻科学施用镁肥,在常规施肥基础上设置对照、7水硫酸镁、氢氧化镁和糖醇镁4个处理,三次重复田间试验,结果显示, 糖醇镁和7水硫酸镁对水稻缺镁黄化矫治效果达极为显著；施用镁肥可以增加水稻产量,且施肥效应糖醇镁＞七水硫酸镁＞氢氧化镁,比CK产量分别提高14.9%、7.7%和7.4%。

Effect of sugar alcohol magnesium on rice: A preliminary report.

The content of exchangeable magnesium in 43.5% of cultivated land of Shanghang County in Fujian Province is generally low (< 50 mg/kg). In order to explore the effect of sugar alcohol magnesium and other commonly used magnesium fertilizers on late rice, a field plot experiment was conducted to investigate rice yield and leaf yellowing rate using control (CK), magnesium sulfate heptahydrate, magnesium hydroxide and sugar alcohol magnesium with three repetitions. Results indicated that the application of sugar alcoholate magnesium or magnesium sulfate heptahydrate had a significantly positive effect on rice leaf yellowing symptoms caused by severe magnesium deficiency. Furthermore, the application of sugar alcohol magnesium, magnesium sulfate heptahydrate and magnesium hydroxide increased rice yield by 14.9%, 7.7% and 7.4% than those in CK, respectively, showing that the application of sugar alcohol magnesium was the effective measurement for improving rice yields.