西瓜一种二收就是第一茬西风采收后，剪去老蔓，促发新蔓．使其重新结瓜e1991～1994年，我们进行了西瓜一种二收的试验示范与大面积推广，均获得成功。多年的实践证明，西瓜一种二收比一种一收产量可增加6O％～SO％，产值可净增1倍以上，经济效益非常显著。回、选用适宜品种要? Watermelon is a second harvest is the first crop after the westerly harvest, cut off the old vine, triggering a new vine. So that it can be re-melted. From 1991 to 1994, we conducted a pilot demonstration and a large-scale popularization of watermelons, both of which were successful. Years of practice has proved that a watermelon two income ratio of a harvest can increase 6O% ~ SO%, the net output can be more than doubled, the economic benefits are significant. Back, choose the appropriate varieties to?