Effect of Shading on Tonkan Orange (Citrus Tankan Hayata) Ⅰ.The Effect of Shading on Wind Injury, Fruit Quality, Size, and Rate of Fruit Growth

柑桔遮蔭試驗第一報　遮蔭對桶柑風害、品質、果實成長之影響

嚴夢如(Mong-Yu Yen) ； 林澤海(Chou-Hai Lin)

《中華農業研究》 15卷1期 (1966/03) Pp. 26-35

https://doi.org/10.29951/JARC.196603.0005

摘要

1．遮蔭可使果皮光滑，油胞小數目多，無遮蔭區則反是。
2．遮蔭對風害有減少可能，經三年果實檢查結果顯示遮蔭區風疤率較無遮蔭區爲低。
3．遮蔭對日燒病有顯著功效。
4．遮蔭對果實成長有帮助，尤其七月間短暫之旱期有遮蔭區仍在成長，而對照區則生育有停滯現象。
5．遮蔭柑桔果汁含量較多，但酸度酸些，可能因遮蔭有晚熟現象，與對照區同時採收尚嫌太早感。

並列摘要

This experiment was carried out at a site near sea coast of Tansuei, Taipei Prefecture. The results may be summarized as follows:
1. Tonkan fruits grown under shading were outstanding for smoothness and attractiveness of appearance, it may have some relation between the size and number of oil gland of the fruit.
2. The percentage of wind injured scurf appeared on fruit was found less on shaded plots than those in the plots without shading. It gave the evidence that interplanting of Acacia would also be effective as windbreak.
3. Sun scald was lower in the shaded plots than in the plots without shading.
4. The growth rate of fruit was reduced under dry condition, almost no growth was found in the plots without shading during dry condition.
5. The fruit juice obtained from shaded plots had more acidity than those of from the plots without shading. This is perhaps due to the late maturity of fruit under shading. Thus the fruits in shaded plots should be harvested later than those in the plots without shading.