The method of increasing tomato yield in spring solar greenhouse by regulating ventilation mode

A solar greenhouse and tomato technology, applied in fruit tree cultivation, etc., can solve problems such as the lack of accurate and effective environmental regulation theory, and achieve the effects of improving water use efficiency, reducing fruit cracking, and meeting growth needs

Active Publication Date: 2021-04-23
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects and problems that the ventilation control of tomatoes in the solar greenhouse is mainly manual experience control and lacks accurate and effective environmental control theory, the present invention provides a method for optimizing the tomato irrigation system in the solar greenhouse by adjusting the ventilation mode

Method used

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  • The method of increasing tomato yield in spring solar greenhouse by regulating ventilation mode
  • The method of increasing tomato yield in spring solar greenhouse by regulating ventilation mode
  • The method of increasing tomato yield in spring solar greenhouse by regulating ventilation mode

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Example 1: The test personnel carried out this test in the solar greenhouse of the Xinxiang Ecological Experiment Base from March to July 2018. This area belongs to the warm temperate continental monsoon climate zone, and the average annual rainfall and evaporation are respectively 550 and 1910mm. The average annual temperature is 14.1°C. The solar greenhouse structure selected in this embodiment is as follows: figure 1 As shown, the greenhouse covers an area of ​​510m 2 (Length 60m, width 8.5m), digging down 0.5m, facing east-west, facing south, covered with 0.2mm thick non-drip polyethylene film; there are 3 vents in the solar greenhouse, which are located on the top of the greenhouse (60m×30cm ), the south side (60m×1.5m) and the north side (2cm×2cm, N=19), the soil in the test area is loamy soil, and the average bulk density, field water holding capacity and withering coefficient of 0-60cm are 1.49g / cm 3 、0.32cm 3 / cm 3 and 0.09cm 3 / cm 3 .

[0024] The tomat...

Embodiment 2

[0029] Embodiment 2: The conditions of the solar greenhouse, the tomato variety, and the planting method in this embodiment are the same as those in Embodiment 1, and the similarities will not be described in detail. The difference is: the combined ventilation method adopted in the growth stage of tomato growth in this embodiment For Z2, specifically:

[0030] Seedling stage (March 10-April 3): After the tomato seedlings are transplanted, pour 20mm seedling water to slow down the seedlings. The whole seedling stage adopts a south-north ventilation mode and closes the top window vents; at this stage, the greenhouse Cumulative evaporation E through 20cm standard evaporating dish p Determine the amount of irrigation water, when the accumulated evaporation E pIrrigate when the value reaches 20±2mm, and the irrigation volume is 0.9E p .

[0031] Flowering and fruit-setting period (April 3-May 15): The daily average cumulative temperature is ≤875°C, adopt the top-north ventilatio...

Embodiment 3

[0033] Embodiment 3: The conditions of the solar greenhouse, the tomato variety, and the planting method of this embodiment are the same as those of Embodiment 1, and the details of the same content will not be repeated. The difference is: the combined ventilation method adopted in the growth stage of tomato growth in this embodiment For Z3, specifically:

[0034] Seedling stage (March 10-April 2): ​​After the tomato seedlings are transplanted, pour 20mm seedling water to slow down the seedlings. The whole seedling stage adopts a south-north ventilation mode and closes the top window vents. Irrigate tomato seedlings when the average soil moisture content of 60cm is less than or equal to 65% of the field water holding capacity;

[0035] Flowering and fruit-setting period (April 2-May 12): The daily average cumulative temperature is ≤900°C, adopt the top-north ventilation mode, and close the south vent; the daily average cumulative temperature is >900°C, adopt the south-north-to...

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Abstract

The invention belongs to the technical field of greenhouse tomato cultivation, and in particular relates to a method for increasing the yield of greenhouse tomatoes in spring by regulating and controlling the ventilation mode. The method measures multiple indexes of greenhouse tomatoes with different ventilation modes, and obtains: Seedling stage: After the tomato seedlings are transplanted slowly, the solar greenhouse adopts the south-north ventilation mode, and closes the top window vents; during the flowering and fruit-setting period: when the daily average cumulative temperature in the solar greenhouse is ≤850-900°C, the top-north ventilation mode is adopted. Close the south window vent; when the daily average cumulative temperature in the solar greenhouse is >850-900°C, adopt the south-north-top ventilation mode; mature picking period: adopt the combined ventilation mode of the south-north-top ventilation mode; The greenhouse microenvironment provides a theoretical basis for improving the quality and yield of tomatoes.

Description

Technical field: [0001] The invention belongs to the technical field of greenhouse tomato cultivation, and in particular relates to a method for increasing the yield of tomatoes in a solar greenhouse in spring by regulating and controlling the ventilation mode. Background technique: [0002] With the adjustment of the modern agricultural industry and the improvement of people's living standards, green and efficient agriculture is becoming more and more popular. Among them, tomato has high nutritional value. In recent years, the planting scale in North China has continued to expand, and the output has steadily increased. It has become people's favorite. One of the vegetables. According to market research, tomato production in North China is mostly planted in solar greenhouses, accounting for more than 80% of the total production scale. Due to the closed and semi-closed nature of the greenhouse, changes in its internal environment directly affect the growth, water consumption...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/05
CPCA01G22/05
Inventor 龚雪文葛建坤李彦彬汪顺生刘艳飞
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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