Effects of Sowing Date and Meteorological Factors on Growth Period and Yield of Winter Pepper in Hainan
The effects of sowing date and meteorological factors on the growth period and yield of winter pepper in Hainan Province were studied to provide a scientific basis for determining a reasonable sowing date and planting method for pepper.The relationships between the growth period and yield of winter pepper in Hainan and the sowing date were analyzed based on experiments involving pepper interval sowing in 2021 and 2022 combined with the linear regression method and partial cor-relation method.The results revealed that for every 10-day delay in sowing,the time required for the emergence of pepper plants at the transplanting,budding,flowering,fruiting,and harvest beginning stages increased significantly by 0.7-4.0 days,and the time required for the emergence of the final harvest stage decreased significantly,by 4.2 days.Delaying the sowing date had little effect on the time needed for pepper emergence.When the sowing date was delayed by ten days,the yield of pepper decreased by approximately 450 kg·hm 2.The lengths of most pepper growth stages were significantly negatively cor-related with the average temperature during the corresponding period and significantly positively correlated with the number of precipitation days and sunshine hours but were not significantly related to precipitation.The yields of pepper were related mainly to the effective accumulated temperature of≥10 ℃ during the growth period.Considering the three aspects of mar-ket time,rainstorms,flood disasters,and yield,the traditional sowing date of pepper should be appropriately delayed from mid-September to early October.Increasing light management,raising the irrigation frequency appropriately,preventing cold,and maintaining warmth could promote the regular growth and development of pepper,timely picking,and yield stability.
万方数据
维普
