A Blind Person Walks And Touches And Determines The Price Of Seed Cotton Reasonably.

　 In recent years, with the continuous deepening and deepening of the reform of the national cotton quality inspection system, all the cotton processing enterprises in the country have carried out equipment upgrading and replacement, replaced the packing equipment, added the drying equipment, and have the production of national cotton reserves. futures Hardware conditions for delivery.

Except for moisture regain and impurity rate of cotton lint produced by cotton processing enterprises, the other inspection items are instrumented and notarized. That is to say, the inspection volume of cotton processing enterprises is relatively reduced. But I think cotton processing enterprises should regard seed cotton quality inspection as the focus of future work.

In recent years, cotton purchase market and price liberalization. There are more and more seed cotton purchasers: cotton picking stations with many years of acquisition experience and farmers' brokers to buy seed cotton. In the acquisition, regardless of the quality of seed cotton, they purchased it from the seed cotton market price and then sold it to a ginning mill. Most cotton ginning plants take a rough look at receiving seed cotton, and are processed according to the unit price of seed cotton. I think it is unscientific and unreasonable for cotton mill to buy seed cotton in this way. Because the cotton lint quality, seed cotton percentage and seed percentage are different in different periods and different varieties of seed cotton. Cotton processing enterprises must carry out "five trials" in a scientific and reasonable way to purchase seed cotton, and scientifically and reasonably determine the price of seed cotton so as to win a win-win situation. Otherwise, the blind will walk and feel the way ahead.

The unit price of seed cotton is determined by seed cotton percentage. Unginned cotton After the rolling, the four main factors are lint grade, seed cotton seed yield, lint and cotton seed at different levels. That is: seed cotton unit price (yuan /kg) = "fixed linen percentage" catty per lint unit price / Jin +99 -- the fixed lint rate * cotton wool seed price (yuan / Jin).

It can be seen from the above formula that in order to determine the unit price of seed cotton accurately, it is necessary to correctly check the percentage of percentage of cotton seed cotton and the grade of lint cotton after seed cotton rolling so as to reasonably determine the purchase price of seed cotton. So how to do well in seed cotton grading and lint grade test? The author summed up the following experience through actual operation in recent years.

First, sampling is the correct test of seed cotton percentage. Lint after rolling Level basis. Because cotton growers are different in cotton planting technology and cotton growing period is different, seed cotton clothes are not consistent; cotton varieties have different lint percentage; soil, rain, diseases and insect pests affect seed cotton pits and grades, as well as picking, sorting, keeping and other links. There is a great deal of error in the classification of seed cotton in the cotton mill. Whether the sampling is comprehensive or not is the most important step for cotton ginning plants to receive seed cotton. When the cotton ginning factory receives the seed cotton from the cotton unit or the car, the sampling personnel shall carry out the sampling by package. The grade difference can be found in the process of cutting, and the special package across the main body level can be selected. The sample size is large and can reflect the average linen level of the seed cotton and the main grade of seed cotton. Therefore, the sample is representative.

Two. Mixing is the key to correct the lint percentage and seed cotton grade of seed cotton. The extracted seed cotton samples are placed in the mixing tray, and the non-uniformity is strictly prevented during the mixing process. Because of the low and heavy cotton petals and stiff petals, they generally fall on the side of the mixed person's body when they are mixed artificially, and the high lint and good flowers correspond to the body of the mixed person. Therefore, we must fully mix up the cotton in all parts of the mixed dish and have the representativeness. Four samples of mixed cotton samples were taken, and one test sample was tested on each corner to see the test results of two samples. If the result takes the average value within the allowable error range, it will be the final test result. If two test samples exceed the margin of error, then re mix the two test samples according to the preceding method. The test results should be taken as the final result in the range of tolerance. The seed cotton with more impurities and less impurities was cleaned by the flower cleaner, and the percentage of impurity content in seed cotton was calculated, which was deducted from seed cotton weight.

Three, weighing measurement is the source of data. Measuring instruments for symmetric reuse must be calibrated according to the statutory verification cycle. For seed cotton, the sample frame must be consistent with each weight. In the process of receiving seed cotton in a cotton ginning factory, we must pay attention to every link in weighing and weighing, ensure accurate measurement and correctly reflect the actual weight of samples, so as to improve the accuracy of seed cotton percentage.

Four. Fitting equipment is an important means to check the percentage of lint percentage and seed cotton grade correctly. At present, the main equipment of the fitting is leather roller ginning machine and small sawtooth fitting machine. According to the grade, fiber length, maturity and quality of the rolling mill, the car should be properly allocated and correctly adjusted. As far as the roller roller is concerned, we should strive to ensure that the root rate of cotton and the cottonseed gross rate are in line with the national standard. That is, reasonably equipped with "three speed 8 distance". The small sawtooth embossing fitting machine should correctly adjust the rotational speed and the trial rolling time, so as to ensure the quality of the cotton liner and the cotton seed gross rate in line with the national standard. The weight and moisture regain of cotton lint after rolling should be measured continuously for a long time so as to prevent the moisture regain from representing the true situation and reduce the error of cotton percentage.

There are many factors that affect the percentage of lint percentage and the rank of lint cotton. Only by grasping every specific inspection link can we ensure the accuracy of linen percentage and the lint percentage of cotton lint. Only when we correctly reflect the grading of seed cotton and the rank of lint cotton can we determine the correct purchase price of seed cotton and reduce the contradiction between cotton and cotton processors. Reasonable and accurate formulation of seed cotton prices to ensure that the interests of buyers and processors win-win.