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马铃薯是景宁县的主要春粮作物,无论种植面积还是总产量均占春粮作物的80％以上。但由于我县山区交通不便,调运种薯困难,而马铃薯用种量又大,种薯成本高,因此,影响了种植面积的进一步扩大。为了努力提高马铃薯的产量,增加商品利用率和种植效益,降低生产成本,调动农民种植马铃薯的积极性,加快马铃薯的发展,我们选用东农303和克新2号两个品种进行了切块栽培研究。播种前分别选择每500克种薯6个(大薯)、12个(中薯)、24个(小薯)三种类型薯25公斤,其中大、中薯按芽眼分布及大小分别进行切块.大薯切成4块,中薯切成2块,每块种薯重约20克左右,在海拔920米和201米两个地方与小整薯播种进行比较。在同样栽培管理情况下,结果马铃薯采用大、中薯切块作为播种材料的,出苗率、茎粗均明显优于用小整薯播种的处理,茎粗分别比用小整薯播种的处理增加0.24厘米和0.08厘米,增加
Potato is the main spring grain crop in Jingning County, accounting for more than 80% of the spring grain crops regardless of planting area or total output. However, due to the inconvenient transportation in the mountain area of the county, it is difficult to transport the seed potato, while the potato is used in a large quantity and the cost of the seed potato is high, thus affecting the further expansion of the planting area. In order to improve the yield of potatoes, increase the utilization of products and planting benefits, reduce the production cost, mobilize the enthusiasm of farmers to grow potatoes and speed up the development of potatoes, we chose Dongnong 303 and Kexin 2 for cutting cultivation . Before sowing, they selected 25 kilograms of 6 types of potato (big potato), 12 (middle potato) and 24 (small potato) per 500g seed, respectively, in which large and medium potato were diced separately according to the distribution and size The big potato was cut into 4 pieces, the Chinese potato cut into 2 pieces, each piece of potato weighing about 20 grams, compared with the small whole potato sown at 920 meters and 201 meters above sea level. Under the same cultivation and management situation, the results of large and medium potato potato cuttings as sowing material, the emergence rate, stem diameter were significantly better than the small whole potato sowing treatment, respectively, than the whole stem sowing sowing treatment increased 0.24 cm and 0.08 cm, increasing