Pitaya flowering inhibitor and application thereof

Abstract

The invention belongs to the field of plant growth regulation, and particularly relates to application of a pitaya flowering inhibitor to inhibition of pitaya flowering, and the inhibitor is 200-300 ppm of gibberellin, 500-1000 ppm of regulatory phosphine, or a combination of 200-300 ppm of gibberellin and 500-1000 ppm of regulatory phosphine. When the inhibitor is applied to pitaya branches, the number of flowers of the branches can be remarkably inhibited, the phenomenon that the production period is too concentrated can be avoided, meanwhile, more nutrients can be accumulated on the pitaya branches, and the yield of the pitaya branches in the neutral period can be conveniently increased; in addition, by adopting the inhibitor, the labor cost can be reduced, and the economic benefit is improved.

Description

Technical Field

[0001] The invention belongs to the field of plant growth regulators, and specifically relates to a pitaya flowering inhibitor and application thereof. Background Art

[0002] Pitaya belongs to the genus Hylocereus of the Cactaceae family. It was first introduced for cultivation in Taiwan Province of China. In the past 10 years, large-scale commercial cultivation of pitaya has developed rapidly. At present, pitaya cultivation areas are mainly distributed in Taiwan, Guangdong, Guangxi, Hainan, Fujian, Yunnan, and Guizhou in my country. At the same time, it has also begun to be cultivated in greenhouses in northern my country. Due to the high economic value of pitaya, its planting area has expanded year by year. Currently, the pitaya cultivated on a large scale is mainly red flesh and white flesh. In my country, it generally blooms from May to October and bears fruit from June to November. The peak production period of pitaya is from May to August, when other fruits are on the market in large quantities, which can easily lead to a drop in the price of pitaya and sluggish sales.

[0003] Since pitaya plants can still grow during the low temperatures of winter and spring and have the habit of producing flowers and fruits in multiple batches a year, as early as the end of the 20th century, research began on breaking the dark cycle by supplementing light for 4 hours to induce pitaya to bloom and bear fruit from November to April of the following year, thereby achieving the purpose of counter-season production of pitaya, avoiding the period when pitaya is put on the market in large quantities, and filling the gap in the fruiting period.

[0004] Although light can promote pitaya to bear fruit in off-season, it still bears more fruit in summer. In the normal production season of pitaya, it can bloom once in about 15 days. Therefore, if there are too many flowers or the market price of pitaya is low, the number can be adjusted by thinning the flowers, removing some flowers or removing all flowers in batches, and then leaving the fruits. This can avoid too concentrated production period and adjust market demand. In addition, since pitaya bears smaller fruits and poorer quality in summer, and there are more diseases and insect pests, the areas or bases that can leave off-season fruits generally thin flowers manually in summer, which is labor-intensive and has high labor costs. Therefore, in order to ensure the quality and yield of pitaya off-season fruits and avoid the impact of a large number of fruits in summer on the yield and quality of off-season fruits, it is urgent to study a pitaya flowering inhibitor, so as to improve production efficiency and save labor costs. Summary of the invention

[0005] The object of the present invention is to provide a pitaya flowering inhibitor and its application. The specific technical scheme is as follows:

[0006] A pitaya flowering inhibitor is used for inhibiting pitaya flowering. The inhibitor is 200-300 ppm of gibberellin, 500-1000 ppm of regulating phosphine, or a combination of 200-300 ppm of gibberellin and 500-1000 ppm of regulating phosphine.

[0007] Preferably, the inhibitor is 200-300 ppm of gibberellin.

[0008] Preferably, the inhibitor is 500-1000 ppm of a regulating phosphine.

[0009] Preferably, the inhibitor is a combination of 200-300 ppm gibberellins and 500-1000 ppm regulating phosphine. In particular, the inhibitor is a combination of 200-300 ppm gibberellins and 500 ppm regulating phosphine.

[0010] Compared with the prior art, the present invention achieves the following beneficial technical effects:

[0011] In order to avoid the phenomenon of concentrated marketing of pitaya during the ripening period or to improve the quality of off-season fruits, the number of pitaya fruits is regulated by inhibiting flowering, which can avoid excessive concentration of production periods. At the same time, it can allow the pitaya branches to accumulate more nutrients, facilitating the increase of production during the pitaya off-season, thus ensuring both the production and quality of pitaya. DETAILED DESCRIPTION

[0012] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0013] The present invention is further explained below in conjunction with specific implementation modes.

[0014] Example 1: Effect of inhibitors on the flowering inhibition of pitaya

[0015] Test site and test materials: Pitaya plantation in Danzhou City, Hainan Province, 4-year-old honey red pitaya plants, growing well, with a planting row spacing of 0.5m×3m.

[0016] Test agents and concentrations: see the table below.

[0017] Table 1: Test agents and concentrations

[0018]

[0019] Experimental method: Before pitaya blooms, 100 branches are randomly marked in each treatment, and the pesticide is applied to treat them. The number of flowers on the marked branches is counted during the flowering period.

[0020] Conclusion and discussion:

[0021] As shown in Table 2, gibberellin promotes the flowering of pitaya at a low concentration of 100ppm, and inhibits the flowering of pitaya at a high concentration of 200-300ppm. Adjusting phosphine promotes the flowering of pitaya at a low concentration of 300ppm, and inhibits the flowering of pitaya at a high concentration of 500-1000ppm. The inhibitory effect of dwarfing on the flowering of pitaya is not obvious. In addition, when gibberellin and adjusting phosphine are used in combination, the flowering of pitaya can be further inhibited.

[0022] Table 2: Effects of chemicals on the flowering of pitaya

[0023] Serial number Number of flowers 1 554 2 345 3 302 4 548 5 364 6 350 7 512 8 510 9 514 10 236 11 182 CK 515

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit it.

Claims

1. A use of a pitaya flowering inhibitor for inhibiting pitaya flowering, characterized in that: The inhibitor is 200-300 ppm of gibberellin, 500-1000 ppm of regulating phosphine, or a combination of 200-300 ppm of gibberellin and 500-1000 ppm of regulating phosphine.

2. The use according to claim 1, characterized in that The inhibitor is 200-300ppm of gibberellin.

3. The use according to claim 1, characterized in that The inhibitor is 500-1000 ppm of regulating phosphine.

4. The use according to claim 1, characterized in that The inhibitor is a combination of 200-300 ppm gibberellin and 500-1000 ppm regulating phosphine.

5. The use according to claim 4, characterized in that The inhibitor is a combination of 200-300 ppm gibberellin and 500 ppm regulating phosphine.

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