Experimental device and experimental method for rice seedlings

Abstract

The invention discloses an experimental device for rice seedlings. The device comprises a box body, a movable plate, a planting chassis, a liquid spraying pipe and a cooling pipe, wherein the movableplate and the planting chassis are arranged in the box body; at least one liquid collecting part is arranged below the movable plate, the liquid collecting part is conical, the bottom surface of the liquid collecting part is fixed with the movable plate, and the vertex of the liquid collecting part points to the planting chassis; the planting chassis is used for containing a culture medium and isarranged below the liquid collecting part; one end of the liquid spraying pipe extends out of the box body, and the other end of the liquid spraying pipe is positioned in the planting chassis and extends out of the culture medium; the cooling pipe is used for communicating cold water to cool the interior of the box body and is arranged below the planting chassis. According to the device, two stepsof pesticide spraying and low-temperature control are combined in the same device, so that excessive movement of the rice seedlings is not required, the experimental variables are conveniently controlled, the experimental steps are simplified, and the operation is simple.

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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