不同覆膜栽培模式与播期互作对寒旱区马铃薯商品性和产量的影响

Effects of Interaction Between Different Plastic Film Mulching Patterns and Sowing Dates on Marketable Tuber Percentage and Yield of Potato in Cold-arid Region

以马铃薯品种‘陇薯3号’为试验材料,采用二因素随机区组设计,设计了3种覆膜栽培模式(春季覆膜栽培、播前覆膜栽培、露地栽培)与3个播种时期(4月20日、4月30日、5月10日),共9个处理组合,研究了不同覆膜栽培模式与不同播期互作效应对寒旱区马铃薯商品性和产量的影响。结果表明,采用春季覆膜栽培模式,在4月30日和5月10日播种,可使马铃薯早出苗、早成熟,缩短马铃薯生育期,商品薯率达86%以上,产量位居前2位,分别达2 008和1 899 kg/667m2,且与其他处理差异显著,在寒旱区马铃薯种植区有一定的推广前景。

The effects of interactions between different plastic film mulching patterns （film mulching in spring, filmmulching before sowing and open-field cultivation） and different sowing dates （April 20th, April 30th and May 10th） on themarketable tuber percentage and yield of potato were investigated in a two-factor randomized block design using potatovariety ＇Longshu 3＇ as plant material. The results showed that the treatments of ＇film mulching in spring - sowing on April 30th＇and ＇film mulching in spring - sowing on May 10th＇ led to earlier emergence and earlier maturity of potato, as well as shortergrowing duration and higher marketable tuber percentage （over 86%）. The two treatments also led to significant higher yields（2 008 and 1 899 kg/667m2, respectively） than those of other treatments. This suggested that the technique could be appliedfor the potato production in the cold-arid region.