摘要
用CaSO4 、CaCO3、CaO、CaO2 、CaCl2 和Ca(NO3) 2 混土处理 ,考察了它们对水稻旱育秧立枯病的防治效果 ,其中CaO和CaO2 对该病具有一定的控制作用。用 0 2 5 %～ 2 %CaO水溶液浸种 4 8h可以使水稻旱育秧立枯病病苗率减少 4 0 %左右 ,以土重 0 5 %～ 1%的CaO处理土壤也使水稻立枯病的发病率降低 5 0 %。在降低立枯病发病率的同时 ,CaO处理也延缓了水稻立枯病的发展。
CaSO 4、CaCO 3、CaO、CaO 2、CaCl 2 and Ca(NO 3) 2 mixed in soil affected the incidence rate of damping-off of rice seedling.CaO 2 and CaO were effective in control of this disease. After soaked in 0.25%-2% solutions of oxide calcium for 48-hour, the infected rates of seedling which undergone damping-off were reduced by 40 percent less than the water control. The infected rates of seedling which cultivated in lime treated soil were also half lower than non-treatment. The results showed the above treatments with calcium were relayed the development of rice seedling damping-off.
出处
《植物营养与肥料学报》
CAS
CSCD
北大核心
2003年第3期369-372,380,共5页
Journal of Plant Nutrition and Fertilizers
基金
国家自然科学基金项目 ( 3 9670 42 9)资助
