豫中南地区喜温性蔬菜露地安全定植期研究

Research on Secure Planting Period of Thermophilic Vegetables in Open Field in Mid-south Henan

为了确定豫中南地区喜温性蔬菜露地安全定植期,根据豫中南地区驻马店市近30a来的晚霜期变化及其对蔬菜生产的影响,以气候保证率为指标,结合多年来春季露地喜温蔬菜的习惯定植期,确定以地面最低温度≤0℃为喜温蔬菜定植期的霜冻指标,以晚霜冻日的保证率在80%的日期为喜温蔬菜安全定植期指标,确立了豫中南地区喜温蔬菜春季露地安全定植期在4月上旬,并提出了安全定植后的保护措施。

According to the change of late frost period in recent 30 years in Zhumadian city of mid- south Henan and its impact on vegetable production, using the guaranteed rate of climate as index, combining with years of habited planting date of spring thermophilic vegetables in open field, fixing the frost indicator of thermophilic vegetable planting date was when the minimum ground temperature was 40℃ ,fixing the secure planting period indicators was when the guaranteed rate of late frost was 80% ,this paper indicated the secure planting period of thermophilic vegetables in open field was in mid-south Henan in early April,and put forward the protective measures after safe planting.