Effects of eight plant growth regulators such as 2,4-D, CCC, S3307,SA and NAA on the growth and physiological characters of tomato seedling were carried out.

• 以中杂9号番茄为试材,研究了2,4-D、矮壮素、烯效唑、水杨酸、萘乙酸、多效唑等8种植物生长调节剂的不同组合对番茄幼苗生长及生理性状的影响。