关键词: 小黑麦, 小黑麦, 光合特性, 氮肥, 追施

Abstract:

We carried on the preliminary studies on the relationship of fruit cracking and different cultivars, different tree age, different cultivation measure used the statistical analysis method in the main pomegranate cultivars in Yicheng, Zaozhuang, Shandong Province. The results indicated that the fruit cracking severity was significant in different pomegranate cultivars. The fruit cracking severity of Daqingpitian, Dahongpitian, Sanbaitian and Xiehuatian were serious which fruit cracking rate was all above 27.6% and higher than other cultivars. The fruit cracking rate of Gangliu, Zhuyeqing, Houpitian and Qingpidazi were lower than 2.3%, which were good fruit anti-cracking cultivars. The fruit cracking rate in different age pomegranate cultivars existed remarkable difference. The fruit cracking rate obviously increased along with the tree age. Bagging technique could remarkably reduce fruit cracking rate and was an effective cultivation measure to prevention fruit cracking.