优质稻佳辐占抗倒力与施氮量的关联性观察  

Investigation of the Relationship Between Lodging-resistance and Nitrogen Rate of High Quality Rice Jiafuzhan

作　　者：赵雅静[1] 姜照伟[1] 李小萍[1] 李义珍[1] 

机构地区：[1]福建省农业科学院水稻研究所,福建福州350018

出　　处：《福建稻麦科技》2014年第3期10-12,共3页Fujian Science and Technology of Rice and Wheat

基　　金：福建省自然科学基金项目(2013J01108)

摘　　要：为探索优质稻佳辐占抗倒力与施氮量的关联性,设置不同施氮量试验。结果明确,施氮量9.2 kg/667m2时,茎秆矮壮产量高;超量施氮时,各节间的外径粗度和秆壁厚度变小,弯曲力矩加大而抗折力降低,倒伏指数升高,成熟前遇风雨发生倒伏;在茎秆中,倒4、倒3节间是最易折倒的部位,超量施氮时,该节间的倒伏指数>200。In order to explore the relationship between lodging-resistance and nitrogen rate of high quality rice Jiafuzhan, setting up the test of different nitrogen rate, the results showed that the culm was Stocky and High yield with nitrogen rate of 9.2 kg/667m2, When excess nitrogen fertilizer,Outside diameter roughness and Culm wall thickness was smaller with each internode, the bending moment increased, anti-fracture reduced, and lodging index elevated, In case of storm occurs lodging before maturity, In the stems, pour 4 and pour 3 Internode was the most easily folded down position, When excess nitrogen fertilizer,the lodging index of the internode was more than 200.

关 键 词：优质水稻 佳辐占 抗倒性 施氮量 

分 类 号：S511.31[农业科学—作物学]