遵义引种涪陵榨菜的适宜播期及茬口分析

Analysis of Suitable Sowing Date and Discussion on Stubble of Fuling Preserved Szechuan Pickle Introduced in Zunyi

遵义立体气候明显,为合理布局涪陵榨菜在遵义的种植,合理安排播种育苗时间及种植模式,该文采用涪陵区及遵义13个国家站气象资料,分析涪陵榨菜种植的气象条件及气象灾害风险,对榨菜全生育期温度界限内积温值进行回归拟合,得出不同县域不同海拔种植榨菜的适宜播期,以及对秋季茬口时间的探讨。市的西部和中部海拔800 m以下、东部600 m以下地区为榨菜气候种植适宜区,宜在8月下旬—9月上旬播种;市的西部海拔在800~1000 m区域,市的中部和东部海拔在600~900 m区域为榨菜气候种植次适宜区,适宜播期为8月中旬,尽量保障冬前壮苗;海拔1000 m以上区域种植榨菜,秋季茬口时间紧张,冬季受低温雪凝灾害风险大,引种榨菜需慎重。在遵义引种涪陵榨菜,在市的西部和中部800 m以下、东部600 m以下地区,界限积温充足,冬季凝冻风险小,可以发展涪陵榨菜。

In order to reasonably arrange the planting of Fuling pickled mustard stems in Zunyi,the sowing and seedling raising time and planting mode.Based on the data of 13 national meteorological stations in Fuling District and Zunyi,the meteorological conditions and meteorological disaster risks of Fuling pickled mustard stems are analyzed,the accumulated temperature value within the temperature limit during the whole growth period of pickled mustard stems is regressed and fitted,the suitable sowing time for pickled mustard stems planting at different altitudes in different counties is concluded,and the time of crops for rotation in autumn is discussed.In the western and central areas with an height below 800 meters above sea level and in the eastern part with an height below 600 meters above sea level,late August to early September is the suitable sowing time for pickled mustard stems planting;In the western part with an height between 800 and 1000 meters above sea level,and in the central and eastern part with an height between 600 and 900 meters above sea level in the city,the suitable sowing time is in mid August to ensure robust seedling before the advent of winter as much as possible,making it the second most suitable sowing time for pickled mustard stems planting;Planting pickled mustard stems at an height above 1000 meters above sea level poses a high risk of being affected by low temperatures and winter freezing disaster in winter due to the tense time of crops for rotation in autumn.Introduction of Fuling pickled mustard stems in Zunyi can be achieved in the western and central parts with an height below 800 meters above sea level and in the eastern part with an height below 600 meters above sea level,where the boundary accumulated temperature is sufficient and the risk of winter freezing is low.