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为了探索马铃薯的适宜播种期,从2015年8月16日至2016年1月31日,开展12期的分期播种试验,观测马铃薯各生育期的气象因子及相应产量,分析各生育期气象因子与产量的相关性。结果表明播种期为10月15日的马铃薯产量最高,其次是10月30日,最差播种期是8月16日;结薯至成熟期的地面温度与产量呈极显著负相关,相关系数为-0.856,该时期是马铃薯产量形成的关键期。柳州马铃薯最佳播种是10月中旬,该生育期中,从播种到结薯期,温度适宜有利于马铃薯的生长发育,结薯到成熟期,温度稍偏低不利于马铃薯的膨大,可通过稻草覆盖或者盖膜方式提高后期温度,提高马铃薯产量。
In order to explore the suitable planting period of potato, 12 stages of sowing experiment were conducted from August 16, 2015 to January 31, 2016 to observe the meteorological factors and corresponding yield of each growth period of potato. The meteorological factors Relevance of yield. The results showed that the sowing date was October 15 the highest yield of potatoes, followed by October 30, the worst sowing date was August 16; the tuber to the maturity of the ground temperature and yield were significantly negatively correlated, the correlation coefficient -0.856, the period of potato production is the key period. The best sowing of potato in Liuzhou is in mid-October. During the growing period, the suitable temperature is suitable for the growth and development of potato from sowing to sowing, the tubers are mature when the temperature is slightly lower, which is not conducive to the expansion of potato, Or cover film way to increase late temperature, improve potato yield.