早春拱棚大白菜播期比较试验

Comparative Experiment on Sowing Date of Chinese Cabbage in Arched Shed in Early Spring

大白菜早春拱棚种植能够丰富春季蔬菜市场,缓解供应淡季,效益较好,因此种植面积逐渐扩大。在大白菜种植过程中,品种、播期是确保其产量和品质的关键,明确适宜播期对确保早春拱棚大白菜产量有重要意义。本试验以当前种植面积较大的吉锦大白菜为试验材料,开展了播期比较试验。结果表明,在采取日光温室加温育苗和"两膜一毡"保护设施条件下,早春大白菜宜在12月中旬至12月末播种,翌年1月下旬至2月上旬定植,4月上旬收获,在此期间,既能避免前期抽薹,也能保证后期结球紧实,净菜率67.8%~73.6%,产量5 274.0 kg/667 m^2~6 300.0 kg/667 m^2。

The arch shed planting of Chinese cabbage in early spring can enrich the spring vegetable market,relieve the low season supply,and bring good benefits,so the planting area is gradually expanded.In the process of Chinese cabbage planting,variety selection,sowing date are the key to ensure the yield and quality.Clear suitable sowing date to ensure that Chinese cabbage grow successfully early spring tent has important significance.In this experiment,the large planting area of"Jijin"Chinese cabbage was used as the test material,and the comparison test of sowing date was carried out.Results showed that in sunlight greenhouse heating seedling and under the condition of"Two film and a blanket"protection facilities,early spring Chinese cabbage should be sown from the middle of December to the end of December,planted from late January to early February next year,and harvested after early April.Sowing and planting during this period can not only avoid early bolting,but also ensure the late fruiting.The net vegetable rate was 67.8%-73.6%,and the yield was 5274.0 kg/667 m2-6300.0 kg/667 m2.