Technology and Mechanism of Rational Close Planting of Cotton in North Xinjiang

Plant density,one of the main factors affecting cotton production,was used as the processing factor,and,measured cotton root dry matter accumulation,changes in stem and leaf dry matter,leaf area index,and leaf photosynthetic rate of change at various growth stages,as well as cotton growing process and the yield components,to study technologies and mechanism of rational close planting cotton.The results showed that drip irrigation cotton cultivation medium fertility best harvested the number of plant density of 12 000/667 m2,14 000/667 m2 planting density to achieve uniform strain dense.It is indicated that the cultivation of the middle population density would obtain the maximum yield in cotton farmland of the medium fertility.