不同密度和施肥量对冀张薯8号马铃薯产量的影响

Effects of Different Planting Densities and Fertilizer Rates on Yield of Potato Variety Jizhangshu No.8

为了确定马铃薯冀张薯8号在贵州的最适栽培密度及施肥量,完善其商品化生产综合配套技术,采用田间试验比较了7个不同栽培密度和5个不同施肥量对冀张薯8号的产量和商品薯率的影响。结果表明:冀张薯8号在贵州省栽培密度为3 600～3 900株/667m2,复混肥(N∶P∶K为15∶15∶15)施肥量为100 kg/667m2时,其商品薯率为79.87%,产量为1 659.7 kg/667m2,达到最高。

In order to explore the best planting density and fertilizer rate for planting potato variety Jizhangshu No.8 in Guizhou province and perfect its integrated support technology for commercial production, the field experiments were conducted to compare the effects of seven different planting densities and five different fertilizer rates on yield and marketable potato rate of Jizhangshu No.8. The results showed that in Guizhou province, when planting density of Jizhangshu No.8 was 54 000-58 500 plants/hm2 and fertilizer rate of compound fertilizer （N：P：K=15：15：15） was 1 500 kg/hm2, the yield and the marketable potato rate reached the highest by 24 895.5 kg/hm2 and 79.87%, respectively.＇