Studing On Cultivation Technology And Popularization Of Colored Cotton

At present,there lied many problems in the cultivation and popularization of colored cotton. This paper studied the effectof different density,the level of fertilizer,irrigation times and content on the yield,quality and growth period of colored cotton in the fields, which were "long lv mian No.2"and "long zong mian No.1".According to the research result,the authour have drawed up the cultivation and popularization technology of colored cotton as follows:1. With 90000～210000 plants per hm~2,the sparser the plant density was,the longer the growth period lasted,and the bigger the total leaf areas of per plant was. Within the whole growth period,the leaf areas andded most from flower bud to flower in the five treatments.under sparse planting,the stem grew more stronger, with thicker root,collar,more branchs and fruits of per plant.As the number of plant density increased,the singer fruit weight became smaller, front of hot season fruit increased but hot season fruit and autumn fruit decreased. The plant density didn't affected the fiber lenth,intensity and other qualitive indexs.2.Path analysis showed that the seed cotton yield had a main influence on lint yield,and total fruit set had a direct effect on the yield of seed cotton,the followed was the single fruit weight. So in order to get a better yield,an effective total fruit set of per areas was necessary based on the reasonable density.3. We also used plant potassium fertilizer to plant color cotton,and found that the branchs,per plant fruit,single fruit weight were all higher than the control. At the same time, front of hot season fruit or hot season fruit were increased,the fruit maturity were shortened,and the spit wadding rate before frost were increased.4.The effect of content and times of irrigation on the indexs of colored cotton were studied. The result was that per plant fruits,single fruit weight and fruit set of three times irrigation were higher than that of two times,with the lowest stiff betal rate under 2400 m~3 content. The times and contents of irrigation all impacted the fiber lenth,intensity and Marklon,among them,the Marklon was significant affected. In a word,the quality of colored cotton of three times irrigation were better than that of two times irrigation,the same with lint yield.5. The planting technology of colored cotton including: Select a good variety;Select a better cultivar considering the planting areas;Select a fertile field with enough water,and plant the colored cotton centrally used segregation method;Sow seed in time with a reasonable plant density;Use different methods to control the plants growth such as chemical,pruning;Use IPM system,pick the cotton scientifically;Inhance comprehensive management in the field.6.Through setting a system which included cultivar breeding,so that the scale colored cotton seed and process will be ensured,so that the scale coloed cotton planting can be promoted.