论文部分内容阅读
白莲腐败病的防治，采用白莲与泽泻轮作，防效很高；与水稻轮作，一般可以减轻发病，防效较好；与旱作物轮作，发病较重；白莲连作，一般宜２～３年，４年以上发病重。莲田冬季浸水，具有好的防效，可以控制病菌的越冬和厚垣孢子的形成。合理施肥，避免过量施用含氮化肥，施用复合肥和农家有机肥，具有较好的防病效果。采用无病种藕，种藕消毒，杜绝种藕上的菌源。栽后，植株生长３～４片立叶时，挖除老种藕并销毁，防止带菌老种藕进入土壤中成为来年的菌源。防治此病，应采取综合治理的措施。
Prevention and treatment of white lotus rot disease, the use of white lotus and Alisma oriental rotation, control effect is very high; and rice rotation, the general can reduce the incidence of better control effect; and dry crop rotation, incidence heavier; Years, more than 4 years of serious illness. Paddy flooding in winter, with good control effect, you can control the overwintering of bacteria and the formation of chlamydospores. Rational fertilization, to avoid excessive application of nitrogenous fertilizer, application of compound fertilizer and farm organic fertilizer, has a good disease control effect. The use of disease-free lotus root, lotus root disinfection, put an end to species of bacteria on the source. After planting, the plants grow 3 to 4 leaves, digging the old lotus root and destroyed to prevent the old lotus rooted bacteria into the soil to become the source of the coming year. Prevention and treatment of the disease, should take comprehensive management measures.