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研究了不同肥力条件下的水稻抗倒伏能力与茎秆物理性状的关系及对产量的影响。以成熟期植株倾斜角度代表抗倒伏能力，倾斜角度与茎秆第一伸长节间长度呈极显著负相关，与基部茎秆粗度、厚度分别呈极显著正相关；不同株高品种的抗倒伏能力存在着品种间差异；施氮对水稻群体倒伏具有重要影响，最高产群体一般出现在７５０ｋｇ·ｈｍ－2的中肥区。研究认为通过减少第一和第二伸长节间长度，适当加强茎秆基部物理性状的强度，降低穗位，增加穗长和穗颈长度等，可以提高水稻植株的抗倒性，使倒伏与株高和生物产量的矛盾在更高产水平上得到统一。
The relationship between lodging resistance of rice and physical characteristics of stems under different fertility conditions and their effects on yield were studied. The lodging angle was represented by the tilting angle of mature plants. The tilting angle was extremely significantly negatively correlated with the length of the first internode elongation, and the stem thickness and thickness were significantly and positively correlated. The resistance of different plant varieties There was a significant difference in lodging ability among different breeds. Nitrogen application had an important effect on the lodging of rice population. The highest yielding population generally appeared in the middle-fertilizer area of 750 kg · hm-2. It is suggested that lodging resistance can be improved by decreasing the length of the first and second elongate internodes, appropriately increasing the physical properties of the stem base, decreasing the ear position, increasing the ear length and panicle length, etc. The conflict between plant height and biomass production is uniformed at higher production levels.