Seed test is an important work in the crop variety experiment. The most important part of the work is to observe and record the traits that can be expressed or fixed after the plants are fully matured. For cereal crops such as rice, wheat, corn, etc. , mainly refers to the investigation of the spike and grain traits. In order to better carry out the breeding work, modern seed breeding has begun to use the automatic seed seed analysis analysis and the grain weight instrumentation system and other breeding information equipment to complete this work. The application of these instruments not only brings about real development of the breeding work. With the help of this, the efficiency and effectiveness of breeding have been improved, and at the same time, the upgrading of breeding informatization equipment has also been realized, providing basic conditions for the development of breeding informatization.
Most of the traditional test seedlings use manual test, that is, they use simple tools such as helper scales, scales, and grain analyzers to obtain crop trait parameters. However, due to the heavy workload and complicated procedures, even operators are very serious. Careful, but also difficult to avoid artificial errors, consistency and accuracy are poor, and the biggest drawback of manual test is a lot of time and labor, observation efficiency is extremely low. Therefore, if this status quo is not changed, then China's variety breeding (testing) work will be greatly affected. The use of automatic seed test analysis and the 1000-seed weight system to carry out automatic test can not only ensure the accuracy of the test results, but also greatly promote the development of informationization in China.
The biggest advantage of automatic seed test analysis and the 1000-grain-weight system is that it can quickly and accurately obtain the parameters of the ear. Through machine vision, it can complete the number of rows of grains, grains per spike, ear length, ear diameter, and tip length in a very short time. Spike length, cob diameter, ear weight, cob weight and other indicators were measured. In data processing, there are obvious advantages. It is an urgent need for the development of modern breeding informatization by adopting automatic seed test analysis and 1000-grain weight instrument system to realize the upgrade of breeding information equipment.
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42mm Split set bolt is also called "split set stabilizer". It was successfully developed by American Professor Scott in the early 1970s. It was used as a patented product by Ingersoll Rand for mining support. In the early 1980s, the Beijing Institute of Well Construction conducted exploratory tests on slotted pipe anchors in the laboratory and achieved good results. Later, it was gradually promoted and applied in the coal system.
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