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在日光温室中研究滴灌条件下不同土壤水分控制下限对番茄生长发育以及产量的影响。结果表明,只有适宜的土壤含水量才有利于番茄植株生长和产量提高;各生育阶段的水分胁迫对番茄的生育和产量均会造成不利影响,其中以中期缺水对产量影响最大。根据番茄不同生育阶段的生理特性及其需水特征确定其相应适宜的土壤含水量范围(占田间持水量的百分比)为:前期58%~63%,中期68%~73%,后期68%~73%。
Effects of different control limits of soil moisture on growth and yield of tomato under drip irrigation in solar greenhouse. The results showed that only the suitable soil moisture content was conducive to the growth of tomato plants and yield; the water stress in each growth stage had an adverse effect on the growth and yield of tomato, of which the mid-term water shortage had the greatest impact on the yield. According to the physiological characteristics of different stages of tomato and its water characteristics to determine the appropriate range of soil moisture content (accounting for the percentage of field water): early 58% ~ 63%, 68% ~ 73%, 68% 73%.