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在控制环境条件和大田试验中对马铃薯品种Estima种薯的发芽进行了调查研究。测试了在控制环境条件下温度、生理时期、播种期和土壤湿度对种薯发芽的影响,并将其结果与生理新种薯和陈种薯在不同土壤类型、不同播种日期和播种深度条件下大田试验的出苗情况作了比较。芽的伸长生长包含缓慢生长期和直线生长期。当温度上升到20℃,芽伸长达10mm时,缓慢生长期缩短。与直接播用低温贮藏的种薯比较,经10℃预热处理后播种的种薯,其缓慢生长期稍有缩短。直线生长的速度随温度升到20℃而增加,这与新陈种薯在不同播种期的结果相似。在干燥土壤中,特别在高温下,芽的生长速度比在接近于大田土壤条件中还慢。实际观察的大田种薯出苗期通常比预测的时间晚,尤其在浅播时。测定土壤湿度可以校正对马铃薯出苗的判断。本研究模式的利用将为农业栽培实践以及作物模式提供比现有估测方法更精确地出芽估计值。
Investigations were carried out on the germination of potato seed Estima seed in controlled environmental conditions and field trials. The effects of temperature, physiological period, seeding period and soil moisture on seed germination under controlled environmental conditions were tested. The results were compared with those of physiological seedlings and Chen seed potatoes under different soil types, different sowing date and sowing depth Field trials of the emergence of the situation were compared. Bud elongation growth includes slow growth and linear growth. When the temperature rose to 20 ℃, shoot elongation up to 10mm, the slow growth period shortened. Compared with the direct seeding of seedlings stored at low temperature, the seedlings planted after pre-heat treatment at 10 ℃ had a slight slow growth period. The rate of linear growth increased with the increase of temperature to 20 ℃, which was similar to that of the new seed at different sowing times. In dry soil, especially at high temperatures, buds grow more slowly than near field soil conditions. Field seedlings actually observed are usually later than the predicted time of emergence, especially during sowing. Determination of soil moisture can correct the judgment of potato emergence. The use of this study model will provide more accurate estimates of budding in agronomic practices and crop patterns than existing estimates.