Effects of bagging treatment with different materials of bags on growth and development of “Fuyou” persimmon

To study the effects of fruit bagging with different types of bags on growth and development of Fuyu persimmon,8 kinds of bags were selected to bag Fuyou persimmon on June 28.By taking the non-bagged fruit as control,adopting regular picking,the fruit's growth changing laws(internal and external index) with bagging treatments were investigated.The results show that the fruits harvested on Nov.12 had great rigidity,lower inferior fruits rate and lower brown spots and good commodity value,and Nov.12 was considered the best period to harvest.In fruit growth and development process,the treatments of outer yellow and inner black double-layer bags and blue cellophane bags decreased fruit weight and Vc content,increased defective fruit rate and brown spots;The treatments of yellow cellophane and red cellophane bags decreased fruit rigidity significantly and increased defective fruit rate;The treatment of colorless cellophane bags increased the incidence of brown spot and defective fruit;The treatments of outer white and inner red double-layer bags and outer yellow and inner white double-layer bags decreased defective fruit rate,which were lower than non-bagged treatment 15.66 %,14.14% respectively when harvested on Nov.12,but other fruit quality of the treatments were declined more obvious,these 7 treatments were thought not suitable to use.The treatment of white single-layer bag slightly decreased fruit internal quality except SCC content,but increased fruit surface smoothness and color uniformity,the commodity of the fruit harvested on Nov.12 better than the non-bagged treatment,it was recommend to use in production.