论文部分内容阅读
我省特早熟棉区存在的问题是: 1.产量不高,变异幅度大。解放后31年来,山西特早熟棉区平均亩产变动于14.5-39.5斤之间,总产变动于836.6-3,674万斤之间。 2.棉花品质差。吕梁地区绒长平均24.6毫米,达到国家收购标准27毫米的仅占1％左右。纤维物理性能差,平均等级为三等,多不适于纺织工业要求。 3.棉子繁殖系数低,种子播种品质差,经常需从外地大量调入种子。
Premature cotton area in our province, the problems are: 1. Yield is not high, a large variation. 31 years after liberation, Shanxi precocious cotton area average yield per mu change between 14.5-39.5 kg, the total output change between 836.6-3,674 kg. 2 cotton poor quality. Long Luliang average length of 24.6 mm, reaching 27% of the national acquisition of only about 1%. Poor physical properties of fiber, the average grade of three, and more unsuitable for the textile industry requirements. 3. Cotton seed multiplication coefficient is low, the quality of seed sowing is poor, often need to be transferred from the field a lot of seeds.