麦套春棉对棉花生态环境及生长影响的研究

对麦套春棉环境和棉株生长发育进行研究，结果表明：热、光、水资源的竞争是造成棉花苗弱、迟发的主要原因，其中热量尤为主要。因此，麦套春棉应采用地膜覆盖，增另有效地积温，以补偿作物层和耕层土壤热量亏缺。麦人生期，套种棉行生态环境和棉株生长发育显著受到小麦的遮荫和蔼和遮荫时间的影响。此种遮荫程度，随着小麦株高的增加而加重，随着麦棉间距的加大而减轻。遮荫时间也随着小麦成熟期的推迟而延长。因此，麦套春棉棉间距

EFFECTS OF INTERPLANTING SPRING COTTON WITH WHEAT ON THE COTTON ECOTOPE AND GROWTH

Studies on relationship between the field environmental of spring cotton interplanting with wheat and the growth and development of cotton plant, the results showed that competition between the heat, the light energy and the water resources was the main factor that caused poor seedling and delay of cotton growth but not enough heat was the first contradictory. Therefore interplanting spring cotton with wheat ought to cultivate under plastic covering so as to increase active soil accumulation of temperature and remedy insufficient of heat in crop canopies and soil of plowed layer. Ecotope in the field of interplanting cotton row and growing development of cotton plant were clearly effected by the shade degree and time of wheat during symbiotic time of cotton and wheat. This shade degree were aggravated by increasing planting height of wheat, were reduced by increasing wide separation between the wheat and the cotton. The shade time were prolonged by delay maturity time of wheat. Therefore interplanting spring cotton with wheat must determined rational separation between the cotton and the wheat, and select suitable variety of wheat.