摘要
谷粒黑穗病是一个全国性的病害,对谷子生产危害很大。粒黑穗病的发生程度直接与菌源数量、土壤环境以及幼苗出土速度有关。病菌在幼苗一心叶期前均可实现侵染,以种子露白到芽长1厘米阶段内的侵染发病量最高。用50％多菌灵可湿性粉剂、40％拌种双可湿性粉剂、50％禾穗胺可湿性粉剂以及25％百理通可湿性粉剂拌种(剂量为种子重量的0.2—0.3％),可有效地控制粒黑穗病的危害,防治效果达80—100％,用25％瑞毒霉可湿性粉剂与上述杀菌剂等量拌种,可兼治粒黑穗病与白发病。四种防治粒黑穗病的拌种剂不论是单用,还是与瑞毒霉混用,对谷子的发芽与幼苗生长均无药害。1984—1985年在齐齐哈尔市15个市县示范防治面积172万亩,平均防治效果80％,增收粮食2196.5万公斤,经济效益527万元。
The grain smut of millet by Ustilago Crameri was dispersed travel far and wide in China. The occurrient rate of the smut determined by the first sources of infection and the conditions of soil as the temperature and the moisture contend. However the makimum quantities of infection was placed in the period of germination of seed to the budlet 1cm.long. The positive results obtained that tried to control the disease by method of seed treatment with 5 fungicides. Artificial inoculations as well as tests for determining varieties reaction. Observed that the many farmer's varieties was more resistance for the smut,but most interesting is the fact that many of the commerial varieties are susseptible grown in culture areas of millet presenday.
出处
《黑龙江八一农垦大学学报》
1989年第2期43-48,共6页
journal of heilongjiang bayi agricultural university
关键词
谷子
黑穗病
防治
种子处理
Millet, Grain smut Condition of outbreak, Control, Seed treatment
