The breeding of small grain crops such as wolfberry fruit and millet is an arduous and meticulous task, and it is also crucial for the indoor test. Taking millet as an example, the most difficult and important one is the one-thousand-grain weight and the out-rice rate, which means that it takes time and effort, and it is also easy to make mistakes. After many years of exploration, we have developed a set of time-saving, effortless and scientific methods that are proposed for reference by colleagues and wish to provide valuable suggestions. The role of automatic seed test analysis and the 1000-grain weight system in this work cannot be ignored. Add WeChat more and more professional just waiting for you to come:
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Regarding the 1,000-grain weight: As the grain size is small, it takes a lot of effort to count, and after each 1000 grains are counted, it is often an error. Later, the container filling method was used to increase labor efficiency by a factor of 100. That is, with a 2.0 to 2.5 ml disposable plastic tube syringe, one end of the needle tip was cut into a tube shape and flattened. Thousands of grains were loaded into the tube and the piston was moved so that the grain was flush with the nozzle and the piston scale was fixed. Refill the millet with 100 grains. After multiple determinations, the error of one hundred grains does not exceed three, and the total error is negligible. It should be noted that the plastic tube can not be too thick or too thin, too thick will increase the error, too thin and difficult to fill.
Later, we studied and adopted the semi-processing band calculation method to solve this problem easily. The method is: first weigh out 10g of sample millet, remove rice by hand, remove some part of the hull, remove the worm, measure the weight of processed grain and rice, and then evenly sample 200 grains. Examples of the percentage of valleys and rice. Note that sampling must be representative. If the rice mix weight is mg, check the number of millet grains per 100 grain is p grain, millet grains q grain, set the weight of the original 10 grams of sample millet millet weight is x grams, the weight of the pot is y grams, then, Based on the above known conditions, the following equation can be derived from the equation: X = (100m - 10q) ÷ p. If the sample taken is not 10 grams, but z grams, the relationship is: x=(100m-zq)÷p. Where: z, m, p, q are all known numbers.
For example: take 10 grams of millet, after rough processing to remove 7 grams of coarse rice left, remove 200 from the rough rice, check the number of millet grains accounted for 80, 20% of the grains accounted for, that is z = 10, m = 7 , p=80, q=20. Substituting for x=6.3 (grams), that is, the rice output rate is 63%. The rice rate measured by this method is obviously closer to reality than the actual rice output rate of actually peeled millet. Because this method can avoid the mechanical damage and loss in the process, it can save labor, labor, science, and easy operation. The automatic seed test analysis and the application of the 1000-grain-heavy instrument system have changed the status and provided more accurate help. 