| 摘要: |
| 本文从氮素吸收和物质生产两方面探讨了麦茬稻的穗肥效应,证明在前期一定量的基蘖肥基础上施用穗肥有增产作用,但在穗肥期内不同施用时间效果不同。其中以减数分裂期施肥增产作用最大,而且明显提高籽粒蛋白质含量。 |
| 关键词: 氮素吸收 籽粒蛋白质含量 单叶面积 麦茬稻 穗肥 物质生产量 减数分裂期 增产作用 吸氮量 叶面积系数 |
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| 基金项目: |
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| STUDIES ON THE EFFECT OF NITROGEN FERTILIZERS APPLIED AS TOPDRESSING AT DIFFERENT STAGES OF EAR DEVELOPMENT ON RICE CROP TRANSPLANTED AFTER WHEAT IN NORTH CHINA |
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| Abstract: |
| In order to obtain the best possible result of application of N-ferti- lizer as top-dressing on rice transplanted after the harvest of wheat in North China,the same amount of ammonium sulphate was applied at four different stages during the development of the ear.All treatments showed increase in yield over the Ck.treatment(no fertilizer applied at the four stages),but the best treatment is application at the third stage,the reduction division stage,giving the maximun increase in yield of grains,as well as ... |
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