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大兴县地处北京南郊,砂土地面积大,春旱秋涝,昼夜温差大,较适于西瓜的生长,是供应北京市西瓜的主要生产基地。过去,西瓜都是春种夏收,4月中下旬播种,7月中旬开始上市,上市集中,供应期短,为了解决供求矛盾,1981年我们开始进行夏播西瓜试验,1982、1983年均获得了较好的效果。一、试验方法 (一)播期:分7月10日、15日、20日、
Daxing County is located in the southern suburbs of Beijing, sandy land area, spring drought autumn flood, temperature difference between day and night, more suitable for the growth of watermelon, watermelon Beijing is the supply of major production base. In the past, watermelon are spring summer harvest, sowing in late April, mid-July start listing, market concentration, short supply period, in order to solve the contradiction between supply and demand, we began in 1981, summer sowing watermelon test, 1982,1983 years have been Better effect. First, the test method (a) sowing time: sub-July 10, 15, 20,