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近三年来,我社利用中棚进行保护地栽培,至今已发展到138亩。预计83年将发展到650亩。中棚栽培的番茄比小环棚增产12～30％;产值增加15～30％。早春地膜覆盖或加套小环棚的2月25日就可定植,5月13日采收。后期由于植株长势强,病害轻,生育期就长,8月8日为末收期。82年中棚育苗1050万棵,定植大田420亩,每亩中棚可搭秧10万、囤苗2.5万,实际利用面积为75％,定植5～6亩。夏季甘兰、花菜用中棚育苗,秧苗生长比露地明显健壮。在中棚内配制F_1番茄种,种子产量比露地成倍增加。
In the past three years, our company has used the shelter for protective cultivation and has grown to 138 mu. It is estimated that it will grow to 650 mu in 83 years. Cultivation of tomatoes in the greenhouse than a small shed yield 12 to 30%; output increased by 15 to 30%. February 25 can be planted in early spring mulching or jacketed shed, May 13 harvest. Late due to strong plant growth, disease light, long growth period, August 8 for the end of the period. In 1982, there were 10,500,000 nursery nurseries and sheds, and 420 acres of nursery fields were planted. Each mu of nursery houses can plant 100,000 nurseries and 25,000 nursery stockpiles. The actual utilization area is 75% and the planting area is 5 to 6 mu. Summer kalanchoe, cauliflower nursery in the shed, seedling growth significantly stronger than the open field. F_1 tomato species were formulated in the greenhouse with seed yield doubling more than the open field.