Lodging is an important factor that seriously affects rice yield and quality. Through the changes of traits closely related to rice lodging resistance under conventional irrigation and water-saving and drought-resistant cultivation modes, the lodging resistance of main rice varieties （lines) in various accumulative temperature zones in Heilongjiang province were studied. The results showed that the water-saving and drought-resistant treatment reduced the lodging index of some varieties （lines), increased the flexural resistance of the two-section sheath, increased the inter-node dry weight, reduced the inter-section cross-sectional area, and thickened the stem wall. The first accumulated temperate zone varieties Longdao 16 and Longdao 24, the second accumulative temperature varieties Suigeng 4, Suigeng 17, Suigeng 18, Beidao 7, Suigeng 089290, the third accumulative temperature zone varieties Suigeng 15, Longgeng 56, Longgeng 51, Longgeng 58, Longgeng 20, Longjiao 08119, Longfeng 12500, Longgeng 3100 and Longgeng 1424, the fourth accumulated temperate zone varieties Longgeng 24, Longgeng 1525, Longjiao 13S6, the fifth accumulated temperature zone variety Longgeng 4344 have high lodging resistance, comprehensive drought resistance index and relative high measured yield. Through investigation and research, we can understand the lodging resistance of the main varieties （lines) in each accumulative temperate zone, which laid a foundation for the research and utilization of rice water-saving and drought-resistant cultivation and lodging resistance germplasm in Heilongjiang province.