Cornstalk lodging resistance tester

Abstract

The invention belongs to the field of agricultural machinery and particularly relates to a cornstalk lodging resistance tester. The cornstalk lodging resistance tester comprises a vertical plate (1), a sliding groove (2) is formed in one side of the vertical plate (1), a trapezoid slider (3) capable of moving up and down along the sliding groove is embedded in the sliding groove (2) and connected with a spring (7) mounted on the upper portion of the vertical plate, a gradienter (4) is mounted on a slope of the trapezoid slider (3), a tension meter (5) is mounted on the front end face of the trapezoid slider (3), a rope sling (6) is arranged at one end of the tension meter (5), a cardan joint (8) is mounted on the lower portion of the vertical plate (1), a pedal (9) is mounted on one side of the bottom end of the vertical plate, and fixing fork heads (10) are welded to the bottom face of the vertical plate. The cornstalk lodging resistance tester has the advantages that one worker can complete cornstalk lodging resistance testing in a field, injuries to living qualified corn plants can be avoided, and the cornstalk lodging resistance tester is convenient to use and low in manufacturing cost.

Description

technical field [0001] The invention belongs to the field of agricultural machinery, in particular to a corn stalk lodging resistance tester. Background technique [0002] Maize lodging is a production disaster that causes maize plants to tilt or fall to the ground due to wind, rain or improper management during the growth of maize. With the development of agricultural productivity and the increase of maize yield, the contradiction between high maize yield and lodging has become more and more prominent, which affects maize production. There are two factors for maize lodging: one is the variety, and the other is the weather. When the latter is uncontrollable, the selection of lodging-resistant varieties has become the top priority of maize breeding. [0003] At present, the corn lodging resistance tester mainly uses the YYD-1B corn stalk lodging resistance tester of Zhejiang Top Instrument Co., Ltd. The defects of the above-mentioned equipment are: 1. It is not suitable for...

AI Technical Summary

Problems solved by technology

The defects of the above-mentioned equipment are: 1. It is not suitable for field measurement. The corn plant must be cut and transported to the laboratory for measurement. 2. The test value is inaccurate. When using the above-mentioned equipment, the corn plant is placed horizontally to exert pressure on the stalk Break it off to measure its stress resistance index. This method concentrates the pressure on a certain point of the whole plant, which is different from the form of natural wind exerting pressure on the external force formed by the stem of the plant. The measured value is inaccurate. 3. Due to It needs to be measured after felling, so the measured plants cannot continue to grow, and what needs to be measured is the corn plants in the entire test field, thus causing a lot of waste. 4. Cutting down and transporting a large number of plants to be measured to the laboratory and classifying them for selection, The workload itself is huge. 4. Equipment manufacturing needs to have professional requirements, and the cost is high; another device for measuring the lodging resistance of corn is the applicant's father who first applied for a corn stalk lodging resistance tester. The device pushes down the corn plant through a push rod arranged on the instrument. The defect of the invention is that, because the corn plant itself is tall, the distance required to push down the stem of the plant is long, and the two parts of pushing down and reading cannot be completed by one operator. Work, on the other hand, the main purpose of the above-mentioned equipment is to test the maximum lodging resistance of the corn stalk. Only when the corn stalk is completely pushed down can the maximum lodging resistance force that the stalk can withstand be read, and the corn is pushed down to different inclinations. The ability to withstand lodging resistance cannot be measured. On the other hand, the contact area between the push rod and the corn stalk is small, and the force is relatively rigid. It also cannot simulate the process of blowing and pressing the corn stalk by natural wind force, and it is easy to cause damage to the stalk. Not conducive to the continued growth of the tested corn stalks

In the understanding of the prior art, no instrument has been found that can complete the measurement of lodging resistance without damaging the living corn plant

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