论文部分内容阅读
辽宁省蚕业科学研究所从1970年开始试验利用土冷库冷藏夏播马铃薯,取得很好的经济效果。据试验,利用这种贮藏方法,经连续8年夏播留种的种薯,仍保持健康种性,保持较高的产量水平,有效地减轻了退化。它的优点是: 1.夏播留种产量高:据风城、岫岩、桓仁、铁岭等县二十多个基点调查,秋薯产量平均每亩2,500多斤,高的4,167斤,低的也有1,500斤。出苗率平均为95.1％,最高的98.3％,低的也在70％以上。 2.种性好:1978～1983年,我们以“克新1号”和“克新3号”为试验材料,进行卷叶、花叶病症状调查,结果是,经土冷库贮藏的“克新1号”种薯,连续夏播6代后,春播退化指数为1.48％,而从黑龙江省调入的“克新1号”种薯,第一年种植,其退化指数就达3.6％。 3.春播产量高:经所内小区和农村基点大面(五百多亩)历年测产,土冷库贮藏的夏播种薯春播生产平均亩产为3,590斤,最高产量为7,796斤,低产的为3,034斤。比对照(从黑龙江省北部调入)种产量提高20～30％,比当地种提高1
Since 1970, Liaoning Institute of Sericulture Science and Technology has experimented on refrigerating summer sowing potatoes with soil cold storage and achieved good economic results. According to the test, using this storage method, the seed of potato which has been planted for summer planting for 8 years continuously maintains healthy species, maintains high yield level, and effectively reduces degradation. Its advantages are: 1. Summer sowing seed production is high: According to the investigation of more than 20 basis points in Fengcheng, Xiuyan, Huanren and Tieling counties, the yield of autumn potato is 2,500 kilograms per mu, 4,167 kilos in height and low There are also 1,500 pounds. The average germination rate was 95.1%, the highest was 98.3% and the lowest was above 70%. 2. Species good: 1978 ~ 1983, we use “Kexin 1” and “Kexin 3” as the test material, leaf curl, mosaic disease symptoms investigation, the result is that the storage by the earth cold storage “grams The new No. 1 seed potato, after 6 consecutive generations of summer sowing, had a spring degeneration index of 1.48%. However, the seed of ”Kexin 1" transferred from Heilongjiang Province had a degeneration index of 3.6% in the first year of planting. 3. Spring sowing high yield: After the intra-district and rural base large (500 acres) over the years to test production, soil cold storage summer sowing spring sowing average yield of 3,590 kg per mu, the maximum output of 7,796 kg, low yield of 3,034 jin. Compared with the control (transferred from the northern part of Heilongjiang Province), the yield was increased by 20-30% and increased by 1