First, the cotton harvest abstract is timely
Cotton picking is the last link in cotton production, and it is the key to ensuring high yield and high yield. As cotton is an infinitely inflorescence crop, budding, flowering, belling, and maturing gradually require multiple harvests. Therefore, according to the maturity of cotton bolls, the third stage of fiber development, that is, the dehydration period of fiber, is about 7 days. The moisture content of the cotton shell decreased from 80% to 30%. The water content of cottonseed dropped from 57% to 18%. The fibers were further dehydrated and matured to form a twist. At the same time, the fiber strength continued to increase due to the deposition of cellulose. Therefore, generally, 6-8 days of cotton bolls have the highest fiber strength, good maturity, many fiber twists, high white color, and high yield.
Second, in the cotton picking during the rainy days rolling attention to grab
The cotton picking time is very long. It takes about 2 months. During the period of tufting and picking, if the sun is full, the temperature is high, and the humidity is low, the cotton boils fast and the bolling is smooth. On the contrary, in the case of long-term low temperature, rain and rain, The cotton bolls could not be cracked normally and the picking period was prolonged, which caused difficulty in picking, bad cotton bolls, lower quality of cotton fiber, and reduced production and income. Therefore, according to the cotton fertility characteristics and high-yield and high-quality cultivation techniques, in addition to adopting anti-rehabilitative and early-growth management, striving to make the picking period and rainy weather be staggered, it is necessary to grab a sunny day, a rainy day, that is, a sunny harvest, a rainy day, such as In case of prolonged rain and continuous years, the temperature is low, the boll opening cracking is slow or the boll opening is not normal, the old ripe bolls should be picked up, which can be heated and dried in the room to promote ripening and cracking.
Third, do not mix "three wires" when picking cotton.
"Three filaments" (also known as heterosexual fibers) refers to the generic term for exotic soft materials such as colored fibers, agricultural films, hair strands, and down and feathers. As the cotton is mixed in the process of picking, drying, storage and processing, the “three wires†are mixed, and after the embossing process, the filaments are changed from long to short, from large to small particles, and these filaments and particles are After spinning many processes, it becomes finer particles. Spinning or weaving with cotton containing "filaments and granules" produces defects, which greatly affect spinning quality during spinning. Therefore, we must strictly control the "three wires" mixed in.
Fourth, how to prevent "three wires" from mixing into cotton
The source of the “three wires†is a series of production operations such as picking, drying, processing, packaging, and storage. Therefore, the quality control from the pollution source of seed cotton is the fundamental to improve the quality of raw cotton. The first is to promote cotton farmers' awareness of the harm caused by the "three wires." Second, do not use chemical fiber bags when picking cotton, and use cotton bags to collect cotton. When using cotton, braces should be used, and cotton cloth should be used for drying, so as to prevent taring on the ground or the road from mixing with “three wires.†Third, separate storage controls, which must be stored at home, strictly separated from livestock and poultry; When picking and drying, people should wear hats to prevent mixed hair, and at the same time advocate family picking. Once they are discovered, they are picked out and processed. Fifth, processing and acquisition companies take control measures.
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