中国稻米Issue(3)：6-9,4.
杂交粳稻甬优538与常规粳稻秀水134本田期适宜施氮比例探讨
Study on Appropriate Ratio of Applying Nitrogen for Japonica Hybrid Rice Yongyou 538 and Conventional Japonica Rice Xiushui 134 in Different Stages
摘要
Abstract
By the mixed regression design, the appropriate ratio of applying nitrogen fertilizer for japonica hybrid rice Yongyou 538 and japonica variety Xiushui 134 in different stages in rice field were studied, and the relationship between factors and grain yields were defined initially. The result indicated that effects of nitrogen fertilizer were as follows: culm fertilizer(CF)>seedling fertilizer(SF)>base fertilizer (BF)>booting fertilizer (BOF) in Yongyou 538;SF>BF>CF>BOF in Xiushui 134. There were significant synergy en-hancing effects among BF×BOF, BF×SF×CF, BF×SF×BOF, SF×CF×BOF in Yongyou 538; and BF×BOF, SF×CF, SF×BOF, BF×CF× BOF in Xiushui 134. Under the constraint condition of factor (ΣXi=1), it showed a parabolic curve relationship between single ratio level and yield, in which the largest curve fluctuation of applying nitrogen fertilizer in booting stage was appeared both in Yongyou 538 and Xiushui 134. Therefore, over-applying nitrogen in booting stage should be avoided. The optimum ratio of applying nitrogen fertilizer is suggested as 31.0:28.8:21.4:18.7 for Yongyou 538 and 24.9:37.3:11.5:26.3 for Xiushui 134.关键词
甬优538/秀水134/施氮比例/产量效应Key words
Yongyou 538/Xiushui 134/ratio of applying nitrogen/yield effect分类
农业科技引用本文复制引用
姚海根,姚坚,孔燕,孙达,李瑾..杂交粳稻甬优538与常规粳稻秀水134本田期适宜施氮比例探讨[J].中国稻米,2016,(3):6-9,4.基金项目
国家水稻产业技术体系项目(CARS-01-49) （CARS-01-49）
