钙试剂处理对早期榛子果实发育与成果率的影响

为探究钙试剂处理对早期榛子果实发育与成果率的影响，为榛子果实的生长发育及产量的提高提供理论依据，在榛子的盛花期进行CaCl₂及EGTA喷施处理，T1处理：浓度为20 mmol·L^-1 CaCl₂，T2处理：浓度为20 mmol·L^-1 EGTA溶液，CK处理：清水作为对照。在花后30和35 d测定果实的直径及钙的含量。在果实成熟期对果簇的果实数量及果实败育率统计。结果表明：T1处理的两品种在花后30 d幼果直径与CK处理相比分别增长了12.63%和14.13%，含钙量（Wt）分别提高了27.2%和44.63%；T2处理的幼果比CK处理分别减少了11.58%和13.04%，含钙量（Wt）分别降低9.74%和13.76%，且均达到显著差异水平。花后35 d T1处理的两品种幼果直径与CK处理比分别增长了10.94%和15.18%，含钙量（Wt）分别提高了25.13%和40.61%；T2处理的两品种幼果直径分别小于CK处理15.63%和13.39%，含钙量（Wt）分别降低26.8%和26.06%，且均达到显著差异。两品种幼果含钙量与成熟后果簇的平均果实数量呈显著正相关关系，与成熟后的平均果实败育率呈显著负相关关系。

Effect of Calcium treat on the Development and Fruit Setting of Hazwlnut Tree

We studied the effect on the hazelnut growth and fruit setting ratio by dealing with calcium reagent in an early stage to provide a theoretical evidence for the hazelnut growth. CaCl₂ and EGTA were sprayed to two marked hazelnut samples until the two solutions drip while flowering. T1:CaCl₂ was 20 mmol·L^-1, T2:EGTA was 20 mmol·L^-1. CK:clear water was as a contrast. Diameters and calcium content were measured at the 30th and 35th days after flowering. All the marked clusters were collected to calculate the number of fruits and abortion rate when they were mature. The diameters of the two young hazelnut samples were, respectively, increased by 12.63% and 14.13% by spraying 20mmol·L^-1 CaCl₂ at the 30th day after flowering compared with CK, while calcium contents(Wt) were, respectively, increased by 27.2% and 44.63%. The diameters of samples were, respectively, decreased by 11.58% and 13.04% by spraying EGTA, while calcium content(Wt) both reaching significant differences with a decrease of 9.74% and 13.76%, respectively. Compared with CK, the diameters of two samples were, respectively, increased by 10.94% and 15.18% by spraying 20 mmol·L^-1 CaCl₂ at the 35th day after flowering, while calcium(Wt), respectively, were increased by 25.13% and 40.61%. The diameters of the two samples were, respectively, decreased by 15.63% and 13.39% by spraying 20 mmol·L^-1 EGTA, while calcium(Wt) both reaching significant differences with a decrease of 26.8% and 20.06%, respectively. Calcium content showed a significant positive correlation with the average number of fruit per mature cluster, while showing a significant negative correlation with the average percentage of abortive fruit per mature cluster.