Cotton picking knowledge
After the cracked cotton bolls take 3 to 4 days, the seeds and fibers can fully mature. Therefore, it usually takes 6 to 7 days for the bolls to start cracking and fully mature. Mature cotton bolls have good fiber quality and high yield after picking. At present, most cotton farmers are accustomed to picking “smiling cotton†(just cracking cotton bolls) in order to avoid losing cotton, which has a great impact on the yield and quality. According to the experiment, the maturation coefficient (maturity) of mature cotton bolls (turning the outer shell of the shell) is 1.69, and the strength is 4.1 g. The average boll weight is 4.16 g. In contrast, the “Fisher mouth cotton†has a fiber maturity coefficient of 1.65 and a strength of 3.9 grams. The average weight of bolls is 3.69 grams, which is 0.04, 0.20 grams, and 0.47 grams lower than mature cotton. At the same time, the water content of “Laughing Cotton†is too high, and the drying labor is laborious, it is difficult to store, and it is prone to mildew. However, picking can not be too late, because the cotton boll exposed outside the shell, after a long time of the sun or rain, the surface of the wax layer of fat will be damaged fiber, reduced color, strength weakened, quality deterioration. Therefore, cotton picking is too early or too late. Whether picking is appropriate or not depends mainly on the appearance of bolling bells. If the bell shells roll over and dry, the cotton wool dries, and it will fall off by hand. This is the optimal time for harvesting. It should be picked in time. The time between picking should be 5 Days ~ 6 days is appropriate. When harvesting, attention should also be paid to changes in the weather, so that the weather can be picked up in a timely manner on a sunny day, grabbed before the rain, and the dew does not pick up. "Heterogeneous fiber" refers to a generic term for chemical fibers, animal fibers, and non-cotton fibers that are mixed into cotton and have a serious effect on the quality of cotton and its textiles. It mainly comes from the process of cotton farmers picking, drying, storing, and selling cotton. Therefore, it is required that cotton farmers should eliminate the mixing of “heterologous fibers†in cotton picking, drying, and sale, and must use cotton bags, prohibit the use of chemical fiber woven bags and other non-cotton bags, and prohibit the use of colored or non-cotton threads and cords. Zhakou. Prior to the sale, the “heterosexual fiber†in the cotton was selected to ensure the quality of the cotton. And to do a good cotton sub-cotton picking, respectively drying, respectively, storage, respectively, to sell, in order to prevent the uneven quality of cotton, reduce quality, affect the use value, in order to help increase the income of cotton farmers.