不同营养元素对阿月浑子苗期缺素症的影响

Effects of Spraying Different Nutrient Elements on Element Deficiency Diseases in Pistacia vera L. Seedlings

为防治大棚育苗期间阿月浑子常见的各种缺素症,进行了营养元素喷施试验。结果表明:当幼苗叶片由正常的绿色转变成病态的红褐色时,磷酸二氢钾有很好的防治作用,当质量分数为0.5%时,发病率仅为1.50%,比对照低13.50%,当质量分数为1.0%时,发病率为零,2个处理与对照相比差异极显著;当幼苗叶片由绿色转变成病态的淡黄色时,氯化锌和硫酸铁均有很好的防治效果,0.1%和0.2%的微量元素处理中,质量分数为0.1%时发病率分别为2.00%和3.00%,比对照分别低14.5%和13.5%,质量分数为0.2%时发病率分别为1.00%和2.50%,比对照分别低15.5%和14.0%,与对照相比差异均极显著。

In order to control frequent element deficiency diseases, effects of spraying nutrient elements on Pistacia vera L. seedlings were researched in greenhouse. The results showed that KH2PO4 presented visible effect on controlling the mahogany plants. Incidence rate was only 1.50%, which was decreased by 13. 5% compared with the control, when spaying 0. 5% KH2PO4; it was zero when spaying 1.0% KH2PO4. There were very significant differences between KH2PO4 treatments and the control. ZnC12 and FeSO4 had remarkably effect on prevention yellow plants. When spraying 0. 1% ZnC12 and FeSO4, incidence rate was 2.00% and 3. 00%, which were decreased by 14. 5% and 13. 5% respectively compared with the control. When spraying 0. 2% ZnC12 and FeSO4, it was 1. 00% and 2. 50%, which were decreased by 15.5% and 14.0% respectively. There were very significant differences between the ZnC12 and FeSO4 treatments and the control.