莴笋喜凉爽，忌高温，不耐霜冻，在长日照下形成花芽。由于生长前期温度高，日照时间长，先期抽现象严重，高产栽培难度较大。为防止和减少秋莴笋未熟抽，我们进行了多年的调研和试验，现将其丰产栽培技术要点介绍如下。1．选择品种选择耐热，对高温长日照反应比较迟钝的尖叶型 Like lettuce cool, avoid high temperature, intolerant frost, flower buds formed in the long sunshine. As the early growth of high temperature, long sunshine, pre-pumping phenomenon is serious, high-yielding cultivation more difficult. In order to prevent and reduce autumn lettuce cooked, we conducted many years of research and testing, now its high yield cultivation techniques are as follows. 1. Select varieties of heat-resistant, long-term response to high temperature, relatively dull tip type