1.Agriculture Forestry and GrandTechnical Extension and Service Centre，Yinchuan，Ningxia 750024； 2.Agricultural Comprehensive Development in Ningxia，Yinchuan，Ningxia 750001； 3.Agricultural Comprehensive Development in Ningxia Reclamation，Yinchuan，Ningxia 750011；4.Chengdu Institute of Biology，Chinese Academy of Sciences，Chengdu，Sichuan 610041
With tomato varieties ‘Anna’，‘Baoluota’，‘Beiying’ as test materials，the effect of bio pesticides ABA and oligosaccharide on tomato production，disease prevention，fruit size，fruit weight，ripe time and spraying times were discussed.The results showed that the yield of three varieties all increased，and average yield was 21.6%，the highest increase production was occurred in ‘Anna’ among the three varieties.The fruit size was bigger in treatment than in control.‘Baoluota’ had the most obvious effect，followed by ‘Anna’，‘Beiying’ was the last.The transverse size of ‘Anna’ was the longest in three varieties after applying biopesticide，and followed by ‘Baoluota’.Fruit weight of three varieties significantly increased in treatment.ABA decreased the incidence of disease.