An experimental device and experimental method for rice seedlings

Abstract

The invention discloses an experimental device for rice seedlings, which comprises a box body, a movable plate arranged inside the box body, a planting chassis, a liquid spray pipe and a cooling pipe; at least one A liquid collecting part, the liquid collecting part is conical, its bottom surface is fixed to the movable plate, and its apex points to the planting chassis; the planting chassis is used to hold the culture medium, and is arranged on the Below; one end of the spray pipe extends out of the box, and the other end is located inside the planting chassis and extends out of the culture substrate; the cooling pipe is used to communicate with cold water to cool the inside of the box, and set Below the planting chassis. The invention combines the two steps of spraying and low-temperature control in the same device, which does not need to move the rice seedlings too much, facilitates the control of experimental variables, simplifies the experimental steps, and is simple to operate.

Description

technical field [0001] The invention relates to the field of rice experiments, in particular to an experimental device and an experimental method for rice seedlings. Background technique [0002] Rice is a cereal crop belonging to Oryza genus, which likes high temperature, humidity and short sunshine. The minimum temperature for seedling germination is 10-12°C, and the optimum temperature is 28-32°C. my country's rice planting area ranks second in the world, and rice production ranks first in the world. Because of its intolerance to low temperature, the main growth area of ​​rice in my country is the south, and the northernmost limit of growth is Huma, Heilongjiang Province. Low temperature chilling injury of rice usually refers to the impact of low temperature below the lowest critical temperature for rice growth, which leads to abnormal growth and development of rice and reduced yield. The low temperature mentioned here means that the daily average temperature is below ...

AI Technical Summary

Problems solved by technology

Different prevention and control plans are required for rice exposed to low temperature weather in different cultivation periods. In order to save time and efficiently prevent and control, it is first necessary to conduct experiments in the laboratory. At present, there is no prevention and control of low temperature hazards for rice during the period of two leaves and one center. experimental device

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