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我省马铃薯常年种植面积600万亩,居全国首位。主要分布在川东地区、川西南山区和川西盆周山区。1990年总产鲜薯60亿公斤。常年单产一般为750公斤左右,主产区间单产差异较大。一、生产上存在的主要问题 (一)良繁体系不健全目前基本上尚未建立健全良繁基地和种薯检验制度。用种杂乱、病害加剧和产量下降。主栽品种如米拉、疫不加、南福塔和巴山白等已退化严重。 (二)栽培管理粗放我省生产区多属盆周贫困山区,技术落后。栽培上多不施追肥和防治病虫。 (三)病害逐步加重近年来,发生的主要病害有:晚疫病发病普遍,高山区最重,1990年一些县(市)估计因本病减产约50％,川东一些地区为20—30％;病毒病常发生的病
The annual planting area of potato in our province is 600 million mu, ranking first in the country. Mainly distributed in the eastern Sichuan region, southwest Sichuan and western Sichuan Peninsula mountains. In 1990, the total output of fresh potatoes was 6 billion kilograms. Perennial yield is generally about 750 kg, the major producing areas vary widely. First, the production of the main problems (A) good complex system is not perfect At present, basically not yet establish and improve the well-fan base and seed testing system. Messy species, increased disease and production decline. Major cultivars such as Mira, the disease is not added, Nan Fata and Bashan Bai have serious degradation. (B) the extensive cultivation and management Extensive production areas in our province Peninsula poor mountainous areas, backward technology. Do not apply topdressing and pest control on cultivation. (C) the disease gradually aggravate In recent years, the main diseases are: the incidence of late blight is common, the highest mountainous areas in 1990, some counties (cities) estimated due to the disease about 50% reduction in some areas of eastern Sichuan 20-30% Diseases of the virus