辽宁省早春气温低,时有寒潮,秋季9月中旬以后温度急剧下降,霜期来临又早,为了保证水稻稳产增产,早育、早插就十分必要,于1963年在盘锦农垦局等7个单位重点试用了塑料薄膜育苗,普遍收到了良好效果。1964年,又进行了重点推广和多点示范,全省共推广使用塑料薄膜644吨,育苗5,150亩,插秧15万亩,都取得了早育秧、育壮秧和早插秧的效果,增产显著。根据二年来的实践经 Liaoning Province has a low temperature in early spring and sometimes cold temperatures. After the fall in mid-September, the temperature dropped sharply and the frost period came earlier. In order to ensure a steady increase in yield, early maturity and early insertion of rice, it was necessary in 1963 for seven units in Panjin Reclamation Bureau Trial of plastic film nursery, generally received good results. In 1964, another key promotion and multi-point demonstration was carried out. The province promoted a total of 644 tons of plastic film, 5,150 acres of nursery plants and 15 million mu of transplanting rice. Both of them achieved the effects of early nursery, strong seedling cultivation and early transplanting and increased yield significantly. According to two years of practice