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| 亚种间杂交稻施钾效应研究 | |
| 引用本文： | 彭春瑞,涂田华,刘小林.亚种间杂交稻施钾效应研究[J].江西农业学报,2000,12(2):1-5. |
| 作者姓名： | 彭春瑞 涂田华 刘小林 |
| 作者单位： | 1. 江西省农业科学院,土壤肥料研究所,江西,南昌,330200 2. 江西省农业科学院,测试研究所,江西,南昌,330200 3. 江西省宜春农业专科学校,江西,宜春,336000 |
| 摘 要： | 对亚种间杂交稻“F1 3 1S/G3 7”进行了 2种施钾量和 3种施钾法试验 ,结果表明 :施钾能明显提高其产量 ,且施钾量越多增产幅度越大。不同施钾法处理中 ,以 60 %分蘖肥加 40 %穗肥处理的增产效果最好 ,1 0 0 %作分蘖肥处理和 60 %分蘖肥加 40 %粒肥处理的增产效果相近。施钾增产的主要原因是库容量扩大 ,抽穗期叶面积系数增加 ,干物质生产量增多。讨论了不同时期施钾的作用和施钾技术 |
| 关 键 词： | 亚种间杂交稻 施钾 效应 |
Effect of K Application on Inter-subspecific Hybrid Rice |
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| PENG Chun-rui,TU Tian-hua,LIU Xiao-lin.Effect of K Application on Inter-subspecific Hybrid Rice[J].Acta Agriculturae Jiangxi,2000,12(2):1-5. | |
| Authors: | PENG Chun-rui TU Tian-hua LIU Xiao-lin |
| Abstract: | Using inter-subspecific hybrid rice “F131S/G37” as material,two levels and three methods of K application were tested,the results showed that:K application could increase the yield of “F131S/G37” markedly,the more K was applied,the more yield increased;in different methods of K application,applying 60% of KCL as tillering stage dressing plus 40% of KCL as head dressing had the best effect of increasing yield,applying 100% as tillering stage dressing and applying 60% as tillering stage dressing plus 40% as grain dressing had close effect of increasing yield;the main reasons K application could increase yield were:enlarging sink capacity,increasing the leaf area index at heading stage,promoting dry matter production.Finally,the effect of K application at different stages and the technique of K application were discussed in this paper. |
| Keywords: | Inter-subspecific hybrid rice K application Effect |
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