Production method of raw cotton of machine-harvested long stapled cotton with fiber main body length being greater than or equal to 35mm

• Main Authors: ZHU BIN, XU ZHIWU, NI GUOLING, WANG TONGREN, KONG JIE, GUO RENSONG, WANG LIANG, ZHANG NA, CUI JIANPING, TIAN LIWEN, LIN TAO
• Format: Patent
• Language: Chinese; English
• Published: 05.07.2022
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED; FISHING; FORESTRY; HORTICULTURE; HUMAN NECESSITIES; HUNTING; MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARYMATERIAL TO OBTAIN FIBRES OF FILAMENTS, e.g. FOR SPINNING; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES; TRAPPING; WATERING

The invention discloses a method for producing raw cotton of machine-harvested long stapled cotton with the fiber main body length larger than or equal to 35 mm. The method comprises the steps of sea-island long stapled cotton planting and seed cotton processing, and the sea-island long stapled cotton planting comprises variety selection, plant row spacing configuration, preparation before machine harvesting, defoliation, ripening and the like. The seed cotton processing comprises the steps of preparation before seed cotton ginning, mechanical separation of cotton seeds and raw cotton and sorting of the separated raw cotton. The main quality indexes of the raw cotton fibers obtained through the method are as follows: the fiber length is 36.5-38.4 mm, the specific strength is 42.3-46.1 cN/tex, the uniformity is 86.2-87.0%, the foreign fibers are 0.2-0.4 g/t, and the impurities are 2.6-3.4%. According to the method, the impurities and the foreign fibers can be effectively removed, and the mechanical damage to t