葡萄炭疽病发生规律与化学防治技术研究

葡萄炭疽病又叫晚腐病,针对葡萄炭疽病发病情况,进行了专题调查和各种防治实验,葡萄炭疽病在陕西关中5~6月开始形成分生孢子,通过风雨、昆虫,传播到果穗上,孢子发芽直接侵入果皮,潜育期约10 d左右,6月中旬开始发病,以后逐渐增多,7~8月进入发病盛期,果实采收后仍能继续发病。5月中下旬开始喷药,一般防效可达70%~90%,喷药4~5次,间隔7~10 d喷药1次,可有效控制葡萄炭疽病的流行与传播。

Occurrence of Anthrax Grape and ChemicalControl Methods Concerned

Investigation on anthracnose of grape,also called late blight,as well as the experiments on control it were carried out.Anthracnose conidia began to form in Guangzhong plain between May and June,Through the wind,rain and insects,conidia spread to the ear and the conidia spore germinate and directly penetrate into the peel,incubating for about 10 days.Anthrax grape began to occur in mid-June,and increased gradually after this.It entered into peak period in July and August and lasted till the post-harvest.Spr...