枣树体矿质营养含量对裂果的影响

Effects of Mineral Content on Fruit Cracking in Jujube Fruit

针对近年来枣树生产上裂果发生严重的问题，以抗裂品种99—1及易裂品种婆枣、赞皇大枣为试材，在果实发育期。对叶片及果实内的矿质元素及裂果率进行统计分析，探讨树体矿质营养含量对枣裂果的影响。结果发现三个品种9月9日达到裂果高峰，婆枣、赞皇大枣、抗裂品种99—1裂果率分别为64．6％，52．3％，5．1％。在整个果实发育期，叶片中Ca元素含量抗裂品种99-1均高于其它两个易裂品种；叶片和果实中K元素含量抗裂品种99-1均低于其它两个易裂品种。在花后30-90天果实P元素含量抗裂品种99-1高于其它两个易裂品种，在花后70天叶片内P元素含量和果实中的N元素含量抗裂品种99-1高于其它两个易裂品种。

In this study the cracking - resistant 99 - 1 Jujube and the susceptible Zhanhuangdazao and Pozao Jujube were used as ma- terials, the cracking fruit rate was observed and the content of N, P, K, Ca, Mg in fruit and led was determined. The results showed that the cracking fruit rate of 99 - 1 was the lowest, with the value of 5.1%, the Zhanhuangdazao and Pozao were 52.3% and 64.6% respectively. The Ca content of leaf in 99 - 1 was significantly higher and the K content of the leaf and fruit for 99 - I was significantly lower than those of the Zhanhuangdazao and Pozao Jujube. The P content of fruit in 99 - I was higher during the 30 - 90 days after full bloom （DAFB） period, the P content of leaf and the N content of fruit in 99 - I were higher than those of the others at 70 DAFB.