CN101828486B - A flower-inducing method for inducing pineapple to bloom - Google Patents

Abstract

The invention relates to a method for inducing flowering of pineapple. The method is to saturate 5A zeolite molecular sieves and absorb ethylene gas, put them into the heart leaves of pineapple plants, and put 2 grains in each pineapple, about 0.05-0.2g, which can induce pineapple flowering. 100% flowering; compared with the traditional ethephon, this method has a higher budding rate, and the pineapple fruit deformity rate after flowering is low, and the number of small fruits and the weight of a single fruit are significantly increased. This method has great advantages. The invention has the advantages of residue, environmental pollution, labor saving and the like, and the method for promoting flowering is also applicable to organic pineapple cultivation.

Description

A flower-inducing method for inducing pineapple to bloom

technical field

The invention relates to a method for promoting flowering of pineapple, in particular to a method capable of conveniently and effectively inducing flower bud differentiation of pineapple.

Background technique

Flower forcing is one of the most important production links in the pineapple cultivation process. It can make pineapple bloom neatly, arrange harvest in a planned way, achieve a balanced supply every year, and is conducive to unified management in the field. Perfect flower forcing technology can improve production efficiency and reduce production. cost. There are many methods for promoting flowering of pineapple, such as: using ethephon, calcium carbide, sodium naphthalene acetate, etc. can effectively induce pineapple to flower, but there are shortcomings:

1. Ethephon Ethephon, also known as dichloroethyl phosphoric acid, will slowly release ethylene when the pH value is above 4.1, and it should be diluted 500-2000 times before use. If the concentration is too low or too high, the effect of flower urging will be reduced. Moreover, ethephon is a strong acid water agent, which is corrosive and causes certain pollution to the environment. It is a prohibited product in organic pineapple planting.

2. Calcium carbide Dissolved in water, calcium carbide releases acetylene gas to promote pineapple flowering, but acetylene is flammable and explosive when exposed to water, and is extremely unsafe for storage, transportation and use, so it is only used in a few pineapple orchards.

3. Sodium naphthalene acetate Sodium naphthalene acetate is not as effective as ethephon and calcium carbide in promoting flowering. Not only is the budding rate low, but it is also irregular, and the time from flower forcing to budding is longer.

Ethephon is currently the most widely used pineapple catalyst in China. With ethephon to promote flowering, each plant needs 30-50ml of water, calculated on the basis of 3000 plants/667m ² , 90-150L of water is required. Because most pineapple orchards in my country's main pineapple producing areas such as Hainan, Yunnan and Guangxi are built on hillsides, far away from water sources, and need to be carried uphill by hand, urging flowers with ethylene requires a lot of labor.

Invention content:

In order to overcome the deficiencies of the prior art, the invention provides a flower-inducing method capable of inducing 100% flowering of pineapple. Use ethylene adsorbent (5A molecular sieve) to absorb ethylene gas, and then throw it into the core of pineapple, ethylene is slowly released from the adsorbent to achieve the effect of flower urging. The purpose is to provide a safe and easy method for urging pineapple flower. No water is required in the process, and pineapple can be 100% induced to flower, and there is no ethephon residue.

The technical scheme adopted in the present invention is: a kind of method for inducing flowering of pineapple to bloom, comprising the following steps:

(1) Preparation

First put 5A zeolite molecular sieve into a plastic container, the zeolite molecular sieve accounts for one-third of the volume of the plastic container, the plastic container has an air inlet and an air outlet, and each outlet can be quickly sealed. Slowly pass ethylene gas into the plastic container to make the zeolite molecular sieve adsorb ethylene to saturation (as determined by gas chromatography, the ethylene released per gram of molecular sieve within 10 minutes is 0.57 mg, and it is in a stable release state after being exposed to air for 4 hours).

(2) save

Put the molecular sieve that has adsorbed ethylene to a saturated state into a sealed bag or bottle and seal it for long-term storage.

(3) flower urging

When using, put 2 molecular sieves (about 0.1g) that absorb saturated ethylene into the heart of the pineapple plant to ensure that the "Bali" pineapple will fully bloom.

Put 0.05-0.2g of zeolite molecular sieve saturated with ethylene into each pineapple.

The advantage of this method is that it is easy to use, does not need to carry water up the mountain, and saves labor. One mu of land only needs molecular sieves less than 500g, which is 7.5 yuan. Ethylene costs 5 yuan, and ethylene costs 2.5 yuan per mu of land, totaling 9.5 yuan. Its cost is equivalent to that required for ethephon flower urging.

Detailed ways:

The present invention will be described in further detail below through examples, and these examples are only used to illustrate the present invention, and do not limit the scope of the present invention.

Example 1

First put 5A zeolite molecular sieve into a plastic container, the zeolite molecular sieve accounts for one-third of the volume of the plastic container, the plastic container has an air inlet and an air outlet, and each outlet can be quickly sealed, and the ethylene gas is slowly introduced into the plastic container In the process, the zeolite molecular sieve is made to adsorb ethylene to saturation. According to gas chromatography, the ethylene released per gram of molecular sieve within 10 minutes is 0.57 mg, and it is in a stable release state after being exposed to the air for 4 hours. Sealed in a pocket or bottle, it can be stored for a long time; when in use, put 2 molecular sieves (about 0.1g) adsorbed with saturated ethylene into the heart of the pineapple plant to ensure 100% flowering of the pineapple.

Example 2

On June 15, 2009, the adsorbed saturated molecular sieve was put into the heart of Bali pineapple plants, and 2 capsules were placed in each plant, with 200ppm ethephon and 30ml as the control. The results show that: with molecular sieves, the number of small pineapple fruits (132) and single fruit weight (1189g) are significantly higher than that of the control ethephon (120 small fruits, single fruit weight 1143.83g), and the deformity rate is 0, which is 6% lower than that of the control ;

Example 3

On September 4, 2009, put the saturated molecular sieve into the heart of the "Bali" pineapple plant, put 2 grains in each plant, and use 200ppm ethephon, 30ml as the control. The results show that: using molecular sieve to promote flowering, the number of small pineapple fruits (129) and single fruit weight (1208.45g) are significantly higher than the control ethephon (118 small fruits, single fruit weight 1045.26g), and the deformity rate is 2%, which is lower than that of the control 8%.

Example 4

On October 1, 2009, the adsorbed and saturated molecular sieve was put into the heart of "Tainong 13" pineapple and "MD-2" plants, 4 grains were placed in each plant, and the flowering rate was 80%.

The above results show that the adsorption of ethylene on 5A zeolite molecular sieve is suitable for the flowering of pineapple, which not only saves time and labor, but also has a better overall effect after flowering than ethephon, and has no residue. It is especially suitable for use in organic pineapple plantations.

Claims (1)

1. A method for inducing flowering of pineapple flowering, characterized in that after saturated adsorption of ethylene gas with 5A zeolite molecular sieves, drop into pineapple plant heart leaf place, induce 100% flowering of pineapple; concrete operation steps are as follows: (1) Selection of ethylene adsorbent and gas Use dry 5A zeolite molecular sieve, the purity of ethylene gas is above 99%; (2) Adsorption process First put 5A zeolite molecular sieve into a plastic container. The plastic container has an air inlet and an air outlet, and each outlet can be quickly sealed; insert the air inlet pipe into the molecular sieve particles, and slowly pass ethylene gas into the plastic container until it exits. There is gas coming out of the gas port and keep it for one minute, stop the gas quickly and seal the plastic container, shake the plastic container to make the zeolite molecular sieve adsorb ethylene to saturation; put the molecular sieve that has adsorbed ethylene to saturation state into a sealed bag or bottle, seal and store; (3) How to use Put the zeolite molecular sieve saturated with adsorbed ethylene into the pineapple leaf core; Each pineapple is dropped into 0.05-0.02g zeolite molecular sieve that has been saturated with adsorbed ethylene; Zeolite molecular sieves account for one-third of the volume of plastic containers. the