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| 不同水分和施磷量对旱作水稻耗水量和水分利用率的影响 | |
| 引用本文： | 何园球,沈其荣,王兴祥,李志明.不同水分和施磷量对旱作水稻耗水量和水分利用率的影响[J].土壤学报,2003,40(6):901-907. |
| 作者姓名： | 何园球 沈其荣 王兴祥 李志明 |
| 作者单位： | 1. 南京农业大学资源与环境科学学院,南京,210095;中国科学院南京土壤研究所,南京,210008 2. 南京农业大学资源与环境科学学院,南京,210095 3. 中国科学院南京土壤研究所,南京,210008 |
| 基金项目： | 国家自然科学基金项目(30070446)和中国科学院知识创新项目(KZCX2-407,KZCX2-413)部分资助 |
| 摘 要： | 通过温室盆栽试验研究了土壤水分和磷素对旱作水稻的耗水量和水分利用率的影响。研究表明 :土壤水分和施磷量对旱作水稻耗水量和水分利用率有极显著的影响 ,且相互间的交互作用明显。旱作水稻 (包括种子 )的耗水量均以中水到高水和中磷到高磷时最高 ,耗水量在生长前期占全生育期的1 5 %～ 1 8% ,生长中期占 63 %～ 68% ,生长后期占 1 6%～ 2 0 %。水分利用率在苗期 (1 2 5～ 1 60gL- 1) ,以低水到中水和低磷到中磷时最高 ;中期 (2 2 2～ 3 5 6gL- 1)到后期 (1 68～ 2 0 8gL- 1) ,以低水到中水和中磷到高磷时最高 ;不同生长阶段的耗水量和水分利用率均以生长中期 >后期 >前期。上述结果将为中国南方丘岗地区水稻旱作的水分和磷素管理提供理论依据 |
| 关 键 词： | 水分 磷素 旱作水稻 水分利用率 |
| 收稿时间： | 4/5/2003 12:00:00 AM |
| 修稿时间： | 2003年4月5日 |
EFFECT OF SOIL MOISTURE AND PHOSPHORUS SUPPLY ON WATER CONSUMPTION AND WATER USE-EFFICIENCY BY PADDY RICE CULTIVATED IN AEROBIC SOIL |
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| He Yuan-qiu,Shen Qi-rong,Wang Xing-xiang and Li Zhi-ming.EFFECT OF SOIL MOISTURE AND PHOSPHORUS SUPPLY ON WATER CONSUMPTION AND WATER USE-EFFICIENCY BY PADDY RICE CULTIVATED IN AEROBIC SOIL[J].Acta Pedologica Sinica,2003,40(6):901-907. | |
| Authors: | He Yuan-qiu Shen Qi-rong Wang Xing-xiang and Li Zhi-ming |
| Institution: | He Yuan-qiu 1,2 Shen Qi-rong 1 Wang Xing-xiang 2 Li Zhi-ming 2 |
| Abstract: | A pot culture experiment was carried out in glasshouse to investigate effect of soil moisture and phos-phorus (P) on water consumption and water use efficiency by paddy rice cultivated in aerobic soil.The results obtained were as follows.Soil water and P fert ilization rate had significant effect on water consumption and water use efficiency by paddy rice, and there was also a significant interaction between them.The highest water consumption is at middle soil moisture to high soil moisture and middle P supply to high P supply.Thus, water consumption percentages in the total water consumption during the whole growth stages were 15%~18%, 63%~68% and 16%~21% at early growth stage, middle growth stage and later growth stage, respectively.The highest water use efficiency(1.25~1.60 g L-1) by rice in seedling period was got at low to middle soil moisture and low to middle P supply while the highest water use efficiencies by rice in middle(2.22~3.56 g L-1) to later stage (1.68~2.08 g L-1) were found at low to middle soil moisture and middle to high P supply.The order of water consumption and water use efficiency by rice in different growth stages were as follows: growth middle stage> later stage> early stage.The results obtained in this experiment could provide the theoretic base of water and P management of paddy rice grown in aerobic soil in the southern hillock areas of China. |
| Keywords: | Water Phosphorus Paddy rice cultivated in aerobic soil Water use efficiency |
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