一、试验、推广情况近几年来,我县对九二○在棉花生产上进行了多点试验、示范工作。根据小面积试验经济效果,82年在全县进行了大面积示范、推广。据统计,全县采用九二○点花和叶面喷施面积达一万余亩,共用九二○一万五千余克。试验点和大面积棉田考查表明,无论是点花或者叶面喷施都有明显的增产效果,分别增产19.1—58.7(见表1)。 I. Trial and Promotion In recent years, our county conducted a number of tests and demonstrations on the production of cotton in 1992. According to the test economic effect of small area, a large area demonstration and promotion was carried out in the whole county in 1982. According to statistics, the county adopted 920 flowers and foliar spraying area of ​​more than 10,000 acres, sharing more than 921,500 kilograms. Test points and a large area of ​​cotton field test showed that both the point of flower or foliar spray have a significant yield increase, respectively, an increase of 19.1-58.7 (see Table 1).