【1】Rooted cuttings

indolebutyric acid

Treated with 500mg/L indole butyric acid for crown buds 25-90 days after cuttings, the root rate and germination rate were increased by 65% and 16%, respectively, root growth and shoot growth were 30% and 40% higher than the control, respectively.

【2】Artificial germination
Chlorflurenol-methy

It has been reported in Japan that the application of plastics to promote the growth of pineapple fruit buds. Generally, there are 7.5 to 15.7 fruit buds per plant, and there are 32 individual fruit buds. According to a report from South Africa, the application of plasticizer to the field pineapples planted with 43,000 plants per hectare twice, which can increase 1 million plants per hectare, and average 23 buds per plant.In 1988, Guangxi Academy of Agricultural Sciences reported that the “4382” variety was treated with 833mg/L plasticine, and the average number of buds per plant was 6.8, and the number of individual plants was 30. According to the experiment of Fujian Institute of Subtropical Botany, after pretreatment with 500mg/L ethephon solution, 250-500mg/L orthopaedic solution was applied to the heart for 3 times, which could promote the average growth of 15-25 plants, and 50 plants in some cases.

【3】Control flowering and fruiting

Calcium Carbide

There are two ways to use calcium carbide to promote the differentiation of flower buds: one is to put 0.5-1 g of calcium carbide powder into the heart of the pineapple, and then add 30 to 50 mL of water; the other is to dissolve the calcium carbide in the water and directly fill the heart of the pineapple, but the solution needs to be It is prepared and used now, and each plant is filled with 50 mL of heart, and the calcium carbide concentration cannot exceed 2%.

Ethephon

Filling each plant with 30-50mL 250-500mg/L ethephon solution, or using 200mg/L ethephon combined with 2% urea and 50mL filling the heart can make pearl pineapple bud 100% and promote early flowering.

【4】Regulate fruit development and increase fruit quality

Gibberellic acid

Generally, gibberellic acid is used to spray fruit twice. The first time is to spray flowers with 40-50 mg/L gibberellic acid liquid when the florets are half open, and the second time is to spray 70-80 mg/L gibberellic acid after the flowers are withered. liquid, which can significantly increase the yield and delay the maturity period by 7-10 days.

Naphthalene acetic acid

After all the flower buds withered, spraying with 33mg/L naphthalene acetic acid solution for the first time, after that, spraying once every 15d for a total of three times, can significantly increase the weight of single fruit, and increase the yield by 31% compared with the control.

4-Chlorophenoxyacetic acid

After flowering, spraying the fruit with 30-40 mg/L medicine can promote the increase of yield and total sugar, and improve the commerciality and quality.

Ethychlozate

20d before harvest, foliar spraying with 100mg/L liquid medicine twice can increase the sugar content of crops.

【5】Ripe

Ethephon

Pineapples can be ripened with ethephon, which can be supplied to the market in advance. The ripened fruits are uniform in maturity, uniform in color and good in flesh color. The concentration of ethephon is generally 500-1000 mg/L, and its concentration and treatment time should be based on weather and fruit maturity. The fruit is harvested in summer, the temperature is high, and the concentration should be low, preferably 500-800 mg/L, and ripening 10-15 days earlier. Fruits are harvested in winter, when the temperature is low, a high concentration of 800-1000 mg/L is appropriate, and ripening 15-20 days earlier. If it is close to maturity, use low concentration, if the maturity is low, the concentration can be appropriately increased. The ripeness of the fruit should be more than 70% in order to ripen, that is, when the peel changes from green to green bean, it is the most suitable time for medication. When spraying, it should be evenly sprayed on the fruit surface, and it is advisable to spray the fruit surface