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高温是影响小白菜生产的一个主要因素。1981年夏季高温期间,我们对南宁市郊蔬菜基地向阳公社新兴大队第一生产队栽植的小白菜进行调查观测,并结合大面积生产情况及室内温汤处理试验作了分析。当地面温度高于40℃、10厘米深土层的温度高于36℃,并且连续出现几天时,对刚播种一两天的则不能出土成苗,1—3片叶子的幼苗亦会产生死苗,4—5片叶子以上的幼苗始有一定的抵抗能力,但生长受一定
High temperature is a major factor affecting the production of cabbage. During the high temperature in the summer of 1981, we investigated and surveyed Chinese cabbage planted by the first production team of Xinxing Brigade of Sunning Commune in the vegetable base of Nanning. Combined with the large-scale production and indoor temperature soup treatment experiment, we analyzed. When the ground temperature is higher than 40 ℃, the soil temperature of 10 centimeter depth is higher than 36 ℃, and several days in succession, the seedlings can not be unearthed just one to two days after sowing, and the seedlings of 1-3 leaves will also be produced Dead seedlings, 4-5 leaves above the seedlings have a certain degree of resistance, but the growth of certain