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Method for preventing natural flowering of pineapples after overwintering

A natural flowering and pineapple technology, applied in fertilization methods, agriculture, fruit tree cultivation, etc., can solve the problems of inability to transform, high toxicity, and limited planting time, and achieve uniform flowering rate, consistent fruit maturity period, and significant economic benefits Effect

Active Publication Date: 2022-01-04
YUNNAN INST OF TROPICAL CROPS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the methods to prevent pineapple seedlings from blooming naturally after overwintering mainly include the following methods: 1. Plant young seedlings, about 4 months before overwintering; Seedlings have high requirements, planting time is limited, pineapple production cycle is prolonged, and the purpose of pineapple annual production and listing cannot be achieved; 2. Choose varieties with low natural flowering rates, but varieties with low natural flowering rates are often not the main varieties produced in the market; 3. 1. Plant growth regulators inhibit natural flowering. Regulators such as silver nitrate and thiuram can inhibit natural flowering, but the operation is cumbersome, the number of times is high, and the toxicity is high.

Method used

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  • Method for preventing natural flowering of pineapples after overwintering

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) choose the pineapple plant that blade number is 20;

[0036] (2) Apply fertilizer to the pineapple plant 2 times in the first 20 days before the local minimum temperature occurs, the time interval between two adjacent fertilizer applications is 7 days, and the time for applying fertilizer is 14:00 in the afternoon. The fertilizer is a mixed aqueous solution formed by mixing urea (with an active ingredient content of 45%), compound fertilizer (the mass ratio of N, P, and K is 15:10:10) and water at a mass ratio of 1:2:500 , the mode of applying fertilizer is foliar spraying and surface irrigation, and the foliar spraying is until the leaf tip fertilizer drips, and the application rate of the surface irrigation is 400ml / plant.

Embodiment 2

[0038] (1) choose the pineapple plant that blade number is 22;

[0039] (2) Apply fertilizer to the pineapple plant 3 times in the first 25 days before the local minimum temperature occurs, the time interval between two adjacent fertilizer applications is 13 days, and the time of fertilizer application is 15:00 in the afternoon. The fertilizer is a mixed aqueous solution formed by mixing urea (the active ingredient content is 46%), compound fertilizer (the mass ratio of N, P, and K is 20:12:12) and water according to the mass ratio of 2:3:600 , the mode of applying fertilizer is foliar spraying and surface irrigation, and the foliar spraying is until the leaf tip fertilizer drips, and the application rate of the surface irrigation is 500ml / plant.

Embodiment 3

[0041] (1) choose the pineapple plant that blade number is 20;

[0042] (2) Apply fertilizer to the pineapple plant 4 times in the first 30 days before the local minimum temperature occurs, the time interval between two adjacent fertilizer applications is 15 days, and the time for applying fertilizer is 16:00 in the afternoon. The fertilizer is a mixed aqueous solution formed by mixing urea (with an active ingredient content of 48%), compound fertilizer (the mass ratio of N, P, and K is 25:10:15) and water in a mass ratio of 3:4:800 , the mode of applying fertilizer is foliar spraying and surface irrigation, and the foliar spraying is until the leaf tip fertilizer drips, and the application rate of the surface irrigation is 600ml / plant.

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Abstract

The invention belongs to the technical field of pineapple planting, and provides a method for preventing natural flowering of pineapples after overwintering. According to the method, pineapple plants with the leaf number larger than or equal to 20 are selected, the urea and the compound fertilizer are applied to the pineapple plants 20-30 days before the local lowest temperature appears, and the problems that the pineapple seedlings naturally bloom after overwintering, the flowering rate is low, blooming is irregular, and the sizes of fruits are unequal are solved; and especially the problems of the rate of core rot, fruit cracking, watering and commercial fruits caused by ripening of the fruits in rainy seasons is extremely low, and economic benefits are greatly reduced are solved. By means of the method, natural blooming of the pineapples after overwintering can be avoided, artificial flower forcing is achieved, the flowering rate and uniformity of the pineapples are improved, the fruit mature periods are consistent, the commodity fruit rate is high, time and labor are saved, and economic benefits are remarkable.

Description

technical field [0001] The invention relates to the technical field of pineapple planting, in particular to a method for preventing pineapple from blooming naturally after overwintering. Background technique [0002] When planting pineapples, because the planting period and the size of the seedlings were not selected properly, the seedlings were not big or small during wintering. After wintering, as the temperature rises, some pineapple seedlings will bloom naturally, and the flowering time is different. , There are fronts and backs; some pineapple seedlings are still growing vigorously and do not bloom. In this way, the situation of flowering and non-flowering, early flowering and late flowering is formed, which cannot be managed uniformly, and the management difficulty is seriously increased. The ripening period of naturally flowering fruit after overwintering coincides with the rainy season, and the fruit is prone to problems such as heart rot, fruit cracking, serious fl...

Claims

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Application Information

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IPC IPC(8): A01G22/05A01C21/00
CPCA01G22/05A01C21/005
Inventor 刘世红殷振华管艳倪书邦
Owner YUNNAN INST OF TROPICAL CROPS