Effects of Different Planting Methods on the Culm Lodging Resistance of Super Rice

作者：Jie Li, Hongcheng Zhang, Jin-Long GONG, Chang Yong, Qi-Gen DAI, Zhong-Yang HUO, Ke Xu, Wei Hai-yan · 发表于：Zhongguo nongye Kexue · 年份：2011 · 被引用次数：30 · 研究领域：Crop Yield and Soil Fertility

【Objective】Lodging is one of the constraints to the integrated production target of high yield,good quality,high efficiency,ecology and security for rice.This study investigated the lodging resistance of super rice under different planting methods.It could provide a theoretical basis for rational use of planting methods and realization of ten word integrated target.【Method】By using two super rice cultivars Huaidao 9 and Ⅲyou 98 as materials and setting three planting methods of precision artificial transplanting with dry nursery middle and strong seedling(ATR),mechanical transplanting with small seedling(MTR) and direct seeding(DSR) in the rice-wheat cropping system in the lower Yangtze River,with lodging index as an indicator to measure culm lodging resistance,in the twenty-fifth days after full heading,the lodging resistance of the first basal internode(N1),second basal internode(N2),third basal internode(N3),fourth basal internode(N4) and main physical characteristics were studied.Furthermore,the correlation analysis between the lodging index,breaking resistance and main culm physical characteristics were studied.【Result】The culm lodging resistance of rice planted with different planting methods was significantly different.The lodging index of ATR was the lowest and culm lodging resistance was the best,while DSR was the highest and culm lodging resistance was the worst.The main reason for difference in the lodging index among different planting methods was the size of the ...