植物生长调节剂在番茄上的使用在番茄的生长期内，常因环境条件变化，加上管理不善，使番茄不能正常生长发育，造成减产。因此，适时适量地使用植物生长调节剂，可使番茄增产。１苗期在苗床内，为防止幼苗徒长，①可用２５００×１０－６浓度的比久溶液，在幼苗期喷１次；... The use of plant growth regulators in tomatoes In tomato growth period, often due to environmental conditions change, coupled with poor management, so that tomatoes can not grow normally, resulting in reduced production. Therefore, timely and appropriate use of plant growth regulators, can increase the yield of tomatoes. 1 seedling in the seedbed, in order to prevent the growth of young seedling, ① available at a concentration of 2500 × 10-6 solution for a long time, in the seedling spray 1; ...