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温室黄瓜沤根初期,根系由白色变成黄褐色,后期腐烂。沤根原因,主要是地温偏低和土壤湿度过大造成的。黄瓜根系对地温变化非常敏感。黄瓜根伸长的最低温度为8℃,最高温为38℃;根毛生长的最低温度是12～14℃,最高温度38℃。黄瓜喜温而不耐干旱,在土壤湿度为85%～95%(相对含水量)时,根系发育良好,但如果土壤水分
In the initial stage of greenhouse cucumber root, the root system turned from white to yellow brown, and later decomposed.沤 root causes, mainly low ground temperature and soil moisture caused by too much. Cucumber roots are sensitive to changes in geothermal. Cucumber root elongation of the minimum temperature is 8 ℃, the maximum temperature is 38 ℃; root hair growth of the minimum temperature is 12 ~ 14 ℃, the maximum temperature of 38 ℃. The warmth of the cucumber is not tolerant to drought. When the soil moisture is 85% -95% (relative water content), the root system develops well, but if the soil moisture