The quality of raw cotton is the key factor that determines the quality of spinning. It is mainly determined by three aspects: one is genetic quality, which is affected by genetic genes or the variety itself; the other is production quality, which is affected by cultivation management measures and climate environment. ; The third is processing quality, which is affected by harvesting and processing. Therefore, to improve the quality of raw cotton, the following three measures must be taken:
1. Choose high-quality cotton varieties
High-quality cotton varieties refer to cotton varieties with good quality characteristics and meeting textile requirements. Specifically, various indicators such as fiber length, fineness and strength meet the needs of textiles and the market, and have good textile utilization value. At the same time, other economic traits must be taken into account, such as good yield, adaptability, insect resistance and disease resistance. The maturity of the variety must also be adapted to the planting area and planting system. Choosing the right cotton quality is the basis for producing high-quality cotton.
2. Reasonable cultivation management
Cultivation and management measures affect cotton growth and population structure, which in turn affect cotton quality. Improper management at the seedling stage will result in late maturity of cotton. Insufficient fertility and cotton malnutrition not only affect the yield, but also affect the cotton fiber quality to a large extent. Poor ventilation and light transmission in cotton fields and inter-plant shading affect the development of cotton bolls and thus affect cotton fiber quality. Climate, diseases and insect pests also have a greater impact on cotton quality. Drought reduces the fiber growth rate, resulting in shorter fiber length, and waterlogging can reduce fiber strength. Cotton bollworm, spider mites, diamonds, and yellow dwarf disease can also cause fiber quality degradation. Therefore, scientific cotton field management should be carried out on the basis of selecting suitable varieties.
3. Scientific harvesting and processing
Picking at the right time is an important part of ensuring high-quality cotton. It is usually better to harvest the bolls about 7 days after they are cracked. When picking, achieve "five points" and "four cleansing", pay attention to climate changes, and mature cotton must be picked in time before wind, rain, and sand. When ginning, according to the actual conditions such as fiber length, strength and moisture content, it is appropriate to arrange the car reasonably to achieve the purpose of high quality, safety and high yield.
To sum up, the production of high-quality cotton runs through the whole process from variety selection, field management to harvesting and processing. Therefore, only strict scientific management can improve cotton quality.