Research on the Plucking Period and the Storing Places of Ya Pears
Pei Suqing Zhang Yixin He Jiqiu Zhang Guozhong Qiu Deli Yin Furong Liu ZhenJing(Non-staple Food Company of Hebei province)
The research on the relationship between plucking periods and the storage places of Ya pears has been done by doing many repeating experiments in three sites from 1984 to 1986. We have made overall analyse according to the experimental results on the fruit quality, wear and tear and the physiological disease of the storage. In our opinion, the Ya pears in the Shijiazhang and Cangzhou prefecture which are suitable to be stored in the ventilation warehouse, should be plucked in the middle and late ten-day of Sep. , 155-165 days are needed in the fruit growth, its growth accumulation centigrade should be 3609℃-3788℃, the average hardness of the fruit should be above 8.42Ib/cm~2. The Ya pears which are suitable to be stored in the cold warehouse should be picked from 7th Sep. to the mid-tea-day of this month, the fruit growth needs 145-155 days, its accumulation centigrade should be 3401℃-3609℃, the average hardness of fruit should be above 10.27Ib/cm~2.