近年双城市郊区菜农多采用灰灰碴育黄瓜苗,此法育出的瓜苗壮、无(?)。 (?)。具体做法是:将炉灰碴先(?)筛 (?)筛筛去灰土,再用粗筛筛除大块和杂质,剩的 (?)的如同玉米碴大小灰碴,装在育苗箱里,时 (?)是不要装 In recent years, suburban vegetable farmers in Shuangcheng use more ash to grow cucumber seedlings. The melon grown in this method is strong and without (?). (?). The specific approach is: the first sieve ash sieve (?) Sieve sieve lime soil, and then coarse sieve sieve large pieces and impurities, the remaining (?) As corn ballast size of ash, installed in the nursery box , When (?) Is not installed