| 【Objective】 The study was conducted to explore the effects of bagging time and bag materials on yield
and quality of golden pineapple and to provide theoretical reference for high yield and high efficiency cultivation of golden
pineapple.【Method】The pineapple were bagged on the 60th, 80th, and 100th day after flowers withering, with white, blue,
green, yellow and virgin pulp paper bags, white non-woven bags and black plastic bags, then effects of different bagging time
and bag materials on the shape, yield and quality of pineapple were analyzed.【Result】 The results showed that bagging
with green virgin pulp paper bags on the 60th day after withering of flowers was beneficial to the increase of fruit length and
width. Bagging with black plastic bags could significantly increase the fruitlet number of pineapple, and the effect was better on the 60th day after withering of flowers. The weight per fruit of pineapple was the highest when black plastic bag was used,
which increased by 11%-77% compared with other treatments. The edible rate was the highest when black plastic bag was used,
which increased by 2%-11% compared with other treatments. When black plastic bag was used on 60th day after the withering
of flowers, the weight per fruit and edible rate reached highest, being 1 316.54 g and 69.38%, respectively. The soluble solids,
soluble sugar and vitamin C of pineapple fruits with black plastic bags showed better effects, reaching 11.55%, 14.95% and
179.34%, respectively and the effect was the best on the 60th day after withering of flowers. The total acidity of pineapple fruit
was the lowest when black plastic bags were used, but there was no significant difference among bagging time.【Conclusion】
Bagging with black plastic bags on the 60th day after withering of flowers was beneficial to increase the weight per fruit and
edible rate of pineapple, improve the soluble solids, soluble sugar and vitamin C, and reduce the total acidity of pineapple fruit. |
