Study on Effect of Lodging to Yield and Relationship between Lodging and Plant Height in Rice
Li Rongtian et al.(Department of Agronomy,Northeast Agricultural Univesity)
Five current paddy rice varieties with different type and maturiting date were tested in six fertili zing levels to study the effect of lodging to yield and relationship between lodging and plant height. The results showed:1. Lodging reduced the grain fertility rate,increased harvesting lose and limited to increasing the yield further in the test varieties. 2.There were difference among the rice varieties in the resistance to lodging and the reason for lodging was too high plant height and especially, too long two lower internode length. Moreover, the fertilizer tolerance, resistance to lodging, harvesting index and plant height werediscussed on their effects to super high yield varieties of rice.