Effects Of Planting Time In Different Areas On The Growth And Gain Of Fall-bearing Raspberry

Raspberry is increasingly favored by consumers because of its rich nutritional value and unique health care function.Compared with frozen fruits,the taste of fresh fruit is better,but the supply period of fresh fruit in domestic open field is relatively short,the storage problem of fresh fruit has not been solved,and the price of imported fresh fruit is high.In addition,foreign companies have gradually occupied the domestic raspberry fresh food production market.In order to meet the domestic demand for fresh raspberry fruit,it is particularly urgent to carry out research on raspberry cultivation in different regions.The climate of Luoyang city,Tong Zhou district of Beijing and Lingbi county of Anhui Province is different,and the traffic is developed.For this reason,the above three sites were used as test sites,and the excellent autumn fruit varieties ‘Polka'and ‘Erika' newly introduced in recent years were used as test materials,In different planting periods(in April and May),Planting under different facilities(greenhouses,tunnels,open fields)to establish facilities for cultivation of primo cane raspberries in these areas.The conclusion were as follows:First,under the tunnel cultivation conditions in Luoyang area,the comprehensive performance of raspberry was better than that of open field and greenhouse.The fruit harvesting period was the longest,the plant result part was the longest,and the fruit yield was the highest.Second,in three different regions,under different planting conditions,the fruit harvesting period,plant growth and yield of the planted raspberry in April were better than those planted in May,and the raspberry planted in April from colonization to flowering and fruiting stage The number of days was less than that planted in May,but the average fruit weight of Luoyang and Tong Zhou in May was higher than that planted in April.In terms of overall performance,it was better to plant in April.Third,in the Tong Zhou district,the average fruit weight and yield of ‘Polka' and ‘Erika'grown in greenhouses were better than those of the other varieties(BP-1,44,R31,R32).As far as‘Polka' and ‘Erika' were concerned,There were not many differences between the two varieties in Tong Zhou;in Luoyang area,Polka was better than Erika in plant growth,single fruit weight and yield;in Lingbi area,Erika was better than Polka in plant growth,fruit quality,single fruit weight and yield.