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郑州春季,2月中旬至3月中旬地温平均只有1—7℃,不利于马铃薯的发芽和生长。春薯生长的后期(6月分)平均地温在24—30℃,气温在25—34℃,最高气温达40℃,这样的高温,不但影响马铃薯的块茎膨大,而且严重地影响马铃薯的种性。以往解决的途径是进行种薯光处理,但从我们的经验看到,利用日光处理收获时死秧(病株)较多,有使种性变劣的趋势。几年来我们采用电灯光照射,在播种前将种薯放在12—13℃的室内,用电灯日夜不停地照射30—40天,提早了生育期,达到
Zhengzhou spring, the average temperature in mid-February to mid-March only 1-7 ℃, is not conducive to the germination and growth of potatoes. The average temperature of the late spring growing season (June) is 24-30 ℃, the temperature is 25-34 ℃ and the maximum temperature is 40 ℃. Such high temperature will not only affect the potato tuber expansion but also seriously affect the potato’s species . In the past, the solution was to carry out the seed light treatment, but from our experience we can see that there were more dead seedlings (diseased plants) during the daylight harvesting and harvesting, which had the tendency to deteriorate the seed quality. Over the past few years we use electric light irradiation, before planting seed in the 12-13 ℃ indoor, with electric lights around the clock for 30-40 days, early growth period, reaching