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《JIANGSU AGRICUTURAL RESEARCH》 1998-02
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EFFECT OF POTASSIUM FERTILIZER APPLICATION ON BRANCH PRODUCTIVITY AND SEED QUALITY OF RAPE

Shan Yuhua Wang Yan Len Suohu Feng Ke Zhang Wenxue Li Dianrong (Dept. of Agron., Jiangsu Agric. Coll., Yangzhou 225009)  
This experiment was carried out on a sandy loam with low effective K and 5 rates of K fertilizer were applied to investigate the responses of branch productivity and seed quality of rape to K application. The results showed as following: ① K application could increase seed yield and change the yield distribution between main anthotaxy and branches. ② The response of seed productivity of uper branches to K application was different from that of lower branches. K application could enhance seed productivity of middle and lower branches and could shorten the productivity gap among branches as well but had little effect on the productivity of main anthotaxy and uper branches. ③ K application could increase the number of branch pods but had little and negative effect on 1000 seed weight and number of seeds per pod respectively. ④ Increasing the rate of K application enhanced oil content and had little effect on the content of fatty acids but tended to increase the content of erusic acid in this experiment. ⑤ The superior effect of K application at stem elongating stage was observed in this study.
【Fund】: 农业部“杂交油菜高产优质营养生理及施肥体系”项目
【CateGory Index】: S506.2,S565.4
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【Co-citations】
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