不同播种期对设施菜薹商品性和生产周期的影响

Effects of Different Sowing Date on Commercial Quality and Production Cycle of Greenhouse Flowering Chinese Cabbage

以菜薹早熟类型品种矮脚45天、中熟类型品种苏薹2号、中迟熟类型品种油绿702和迟熟类型品种冬薹为试验材料,每月穴盘育苗1次,4叶龄定植于大棚。重点观测主薹质量(衡量商品性的重要指标)和生产周期等指标,结果表明:菜薹产品要具备基本的商品性和合适的生产周期,2月下旬至4月下旬可以播种与冬薹熟性相似的迟熟类型品种,4月下旬至5月下旬可以播种与油绿702熟性相似的中迟熟类型品种,5月下旬至9月上旬可以播种与苏薹2号熟性相似的中熟类型品种,9月上旬至10月中旬可以播种与油绿702熟性相似的中迟熟类型品种,10月中旬至11月中旬可以播种与冬薹熟性相似的迟熟类型品种,11月下旬至次年2月中旬所有参试类型品种的商品性均欠佳而不适合播种。

Early maturity variety Aijiao 45 d,mid-maturity variety Sutai No.2,mid-late maturity variety Youlü702 and late maturity variety Dongtai were used as experimental materials.The plug seedling culture was carried out once a month,and planted in greenhouse at 4-leaf stage.Indicators such as main sprout weight(the important indicator that measured commercial quality)and production cycle were focused on observation.The results showed that flowering Chinese cabbage product would have basic commercial quality and appropriate production cycle under this experimental condition.Late maturity variety similar to Dongtai could be sown from late February to late April.Mid-late maturity variety similar to Youlv 702 could be sown from late April to late May.Mid-maturity variety similar to Sutai No.2 could be sown from late May to early September.Mid-late maturity variety similar to Youlv 702 could be sown from early September to mid October.Late maturity variety similar to Dongtai could be sown from mid October to mid November.All the tested varieties with poor commercial quality were not suitable for sowing from late November to next mid February.