三种钙素肥料对大蒜病害的防治效果

Effects of calcium fertilizer on garlic diseases control

为选择适宜豫东大蒜产区的钙素肥料,以早熟蒜‘苍白1号’为试验材料,对大蒜设置3种钙素肥料处理:硫酸钙处理,碳酸钙处理,氯化钙处理,以不施钙肥作为对照,探讨了钙素肥料对大蒜腐霉根腐病、软腐病、二次生长的影响。结果表明,每hm^2施用300 kg硫酸钙对大蒜腐霉根腐病防效可达89.69%,对软腐病防效可达84.50%,对二次生长防效可达70.59%,防治效果显著高于碳酸钙、氯化钙和对照;碳酸钙对大蒜腐霉根腐病的防效,分别为74.80%、49.03%,对软腐病的防效分别为71.41%、55.60%,对二次生长的防效分别为63.82%、54.25%。3种处理间的防效均达到显著或极显著水平,且3种处理的防效均显著高于对照,表现为硫酸钙>碳酸钙>氯化钙>对照。

In order to select suitable calcium fertilizer for garlic in eastern Henan, an early-maturing garlic variety ‘Cangbai No. 1＇ was used as test material, calcium sulfate, calcium carbonate and calcium chloride were applied, and non-calcium fertilizer was control, then the pythium root rot, soft rot and secondary growth were analyzed. The results indicated that the control efficiency of the root rot, soft rot and secondary growth of the garlic applied by 300 kg calcium sulfate per 667m^2 were 89.69%, 84.50% and 70.59% respectively, were significantly higher than that of treatments. The prevention effect of calcium carbonate and calcium chloride on garlic pythium root rot were 74.80% and 49.03%, on garlic soft rot are 71.41% and 55.60%, on garlic secondary growth are 63.82% and 54.25%. The control efficiency of three treatments reached the significant level, as the order of calcium sulfate lime calcium chloride control.