大白菜是高产作物,丰年亩产万斤以上,但年际间产量变化很大,主要是三大病害流行和灾害性天气的出现,现以防病、抗病为中心,谈谈大白菜高产稳产的有关问题。一、品种选择根据目前生产上存在的问题,实现高产稳产要把对品种抗病性的要求放在首位,并兼顾其它性状。从全省现有主栽品种的种植表现和新品部示范结果看,以石特 Chinese cabbage is a high-yielding crop, with a yield of more than 10,000 kg per mu in the harvest year. However, annual output varies greatly, mainly due to the prevalence of the three major diseases and the occurrence of severe weather. Now, taking prevention and disease as the center, Stable production related issues. First, the choice of varieties According to the current production problems, to achieve high and stable yield should put the disease resistance requirements of varieties in the first place, and take into account other traits. From the planting performance of the existing main varieties in the province and demonstration results of new products department, the stone special