脐橙52的结果习性

Fruiting Habit of Navel Orange No. 52

1991—1994年的试验结果表明,脐橙52较丰产、稳产,座果率高达0.9%—2.6%,花大量脱落是在开花期间(高达87.2%);谢花后生理落果主要集中在5月上、中旬,6月中旬稳果,果实初期迅速膨大,纵径生长比横径快,10月中旬后,果实日趋成熟,纵横径生长亦日趋缓慢,生长充实的春、秋梢均是良好的结果母枝,母树(成年大树)春梢结果母枝比率高于秋梢结果母枝,幼年初果树以秋梢为主要结果母枝,母子代均以0.40—0.75cm座果性能最好,母枝叶片数,母子代亦以3—5叶座果性能最好,不同花序比率与座果性能,以有叶顶花比率最低,座果性能最好,有叶单腋花与有叶花序座果性能相当,无叶花序比率最高,座果性能最差。

The experiment was carried out from 1991 to 1994. The results showed that Navel orange No. 52 was of high and stable yield and high percentage of fruit set by 0.9%-2.6%; 87.2% flowers dropped mainly during the period of the bloom; physiological drop chiefly took place from the first ten days to the middle ten days of May and stopped in the middle ten days of June. Longitude grew faster than diameter in the early stage when fruit expansed rapidly; while longitude and diameter grew slower along with the ripening of fruit after the middle ten days of Octoker. The percentage of Spring shoot was higher than that of Autumn shoot. Although both Spring shoot and Autumn shoot were excellent (fruiting) cane, Autumn shoot was the principal fruit cane in the first fruit setting trees; fruiting cane about 0.40-0.75 cm in diameter was best in fruit setting. The best number of leaves on bearing branch fruit setting was 3-5. In the relationship between the rate of inflorescence and the situation of fruit set. Leafy inflorescence(apical inflorescence) had the lowest rate, but the highest fruit; leafy inflorenscence (axilla flower) was the second; while leafless inflorescence had the highest rate, but the lowest fruit set.