The results show that the per unit area yield of tomato has incrased by 53 . 7 % in greenhouse of the photo - ecology agricultural film 用这种光生态膜苫盖日光温室进行番茄生产，产量提高了53 . 7 % 。
2.
They must not be transported in open wagons on railways and , if by ship , no top loading is allowed ; if by truck , they must be securely fastened up and safely protected 铁路运输不得使用敞车，水路运输不得配装仓面，公路运输应当苫盖严密，捆扎牢固。
3.
Yingkou salt industry ( group ) corporation has ranked among the eight largest salt works of china , with annual salt - producing capacity of 800000 tons , mechanization realized in whole process and plastic film covering reaching 100 % . at the end of this century the production capacity will reach 1 , 000 , 000 tons 营口盐业（盐业）公司，已跨入中国八大盐场行列，年产海盐80多万吨，全部实现了机械化，塑料苫盖达100 % ，本世纪末将实现年生产能力100万吨。
