马铃薯复种玉米品种和播期对产量和经济效益的影响

Influence of Different Varieties and Sowing Time of Potato Multiple Cropping Maize on Yield and Economic Benefits

为探索在辽西地区马铃薯复种玉米的可行性,对上茬马铃薯双膜和单膜两个时期到下茬两个播期不同玉米品种全程调查>10℃积温、作物生育期、植株性状、作物产量、经济效益等相关数据,并进行分析。结果表明:下茬6月15日播种德美亚2号比当地种植品种增产18.46%,下茬6月25日播种德美亚1号比当地种植品种增产14.51%,从马铃薯复种玉米模式中总体衡量,双膜种植模式最高产生的纯利润达到64 895元·hm-2,单膜种植模式最高产生的纯利润达到63 330元·hm-2。

To explore the effects in western Liaoning Province potato cropping corn, potato crop from the double membrane and single film two periods to different maize varieties, the entire investigation〉 10℃ accumulated temperature, crop growth period, plant traits the following two sowing dates, production, economic and other data were analyzed. The results showed that： the following June 15 Demeiya No.2 increased yield 18.46% than locally grown varieties, the following June 25th seeded Demeiya No.1 increased yield 14.51%, from potato cropping pattern in the overall measure of corn, net profit of double membrane cropping patterns generated the highest 64 895 yuan·hm^-2, net profit of single film cropping patterns reached 63 330 yuan· hm^-2.