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马铃薯是我市三大作物之一,历年种植面积约85万亩。它既可作粮,又能当菜,在全市粮食生产及群众生活中占有举足轻重的地位。因此,大力发展马铃薯生产具有非常重要的意义。 1 马铃薯低产原因我市地处全国北方马铃薯一作区的边缘地带,海拔较高,气候冷凉湿润,雨量充沛,昼夜温差大,土地资源丰富,土层深厚,具有发展马铃薯生产良好的基础条件。但目前产量还很低,1992年全市平均亩产仅747.7公斤(薯块,下同)。从多年的生产实践及田间调查资料分析,造成马铃薯低产的原因主要有以下几个方面:
Potato is one of the three major crops in our city, with an annual planting area of about 850,000 mu. It can make food, but also when the food, in the city’s food production and people’s lives occupy a pivotal position. Therefore, to develop potato production is very important. 1 reasons for the low yield of potatoes The city is located in the northern part of the northern potato area for the edge of the zone, higher altitude, cool and humid climate, abundant rainfall, large temperature difference between day and night, rich land resources, deep soil, with the development of potato production and good basic conditions. However, the current output is still very low. In 1992, the average mu yield in the city was only 747.7 kilograms (tubers, the same below). From many years of production practices and field survey data analysis, resulting in low yields of potatoes mainly in the following aspects: