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近年来抚顺地区利用大棚、塑料温室等,在早春生产番茄,一般在3月下旬到4月初进行定植,6月上中旬可以上市,比露地生产提早上市20～30天。由于早春气温低,定植在保护地的番茄,在不加温的情况下,日平均温度在20℃以下,夜间经常出现10℃以下的低温,常引起番茄落花,有的即使花朵不落,也不膨大,形成小粒果,没有商品价值。落花和小粒果的比率达到25～40%,使单位面积产量下降。
In recent years, Fushun region uses greenhouses and plastic greenhouses to produce tomatoes in early spring. It is generally planted in late March to early April, and can be put on the market in mid-June and 20 to 30 days ahead of open production. Due to the low temperature in early spring, the tomato planted in the protected area has a daily average temperature of below 20 ° C without heating and a low temperature below 10 ° C at night, often causing the tomato to fall, and some even if the flowers do not fall Not swollen, the formation of small fruit, there is no value of the commodity. Flower and small fruit ratio of 25 to 40%, so that the yield per unit area down.