种植方式和磷素水平互作对陆稻和水稻产量及磷素利用的影响  

Effects of Interaction between Phosphorus Nutrition and Cultivation Methods on Grain Yield and Phosphorus Utilization of Upland Rice and Paddy Rice

作　　者：张亚洁[1] 华晶晶[1] 李亚超[1] 陈莹莹[1] 杨建昌[1] 

机构地区：[1]扬州大学/江苏省作物遗传生理重点实验室/农业部长江中下游作物生理生态与栽培重点开放实验室,江苏扬州225009

出　　处：《作物学报》2011年第8期1423-1431,共9页Acta Agronomica Sinica

基　　金：国家自然科学基金国际重大合作项目(31061140457);2008年中央级科研院所基本科研业务费专项基金项目(农业)(200803030);大学生科技创新基金项目(2010)资助

摘　　要：以粳型陆稻中旱3号和粳型水稻扬辐粳8号为材料,设置裸地旱种和水种2种种植方式及3种磷素(P2O5)水平:低磷(LP),45kg hm-2;常磷(NP),90kg hm-2;高磷(HP),135kg hm-2。结果表明,在旱种条件下,增加施磷量,陆稻和水稻HP和NP的产量和磷素累积量均较LP显著增加,陆稻HP和NP的磷素物质生产效率和磷素籽粒生产效率较LP显著下降,而水稻的差异不显著;在水种条件下,陆稻的产量、磷素累积量和磷素籽粒生产效率HP较NP差异不显著,但较LP显著增加,磷素物质生产效率HP较NP显著下降,水稻产量、磷素累积量HP较NP有下降趋势,磷素物质生产效率和磷素籽粒生产效率HP和NP之间差异不显著。旱种使稻株不定根数减少,磷素累积量降低,磷素物质生产效率增加,磷素籽粒生产效率下降,产量下降,但水稻产量下降幅度比陆稻更大。与水稻相比,陆稻不定根数少,磷素累积量少,成穗数少,结实率和千粒重高,产量较低,磷素物质生产效率和磷素籽粒生产效率增加。种植方式×磷素水平的互作对水稻和陆稻花后磷素累积量、磷素籽粒生产效率和不定根数、磷素物质生产效率有显著和极显著影响。花后磷素累积量与产量和不定根数呈极显著正相关,与磷素利用率呈极显著负相关。在旱种条件下,增加施磷量可以增加陆稻和水稻的产量,但无论旱种还是水种,水稻和陆稻产量对磷素响应有差异。The objective of this study was to investigate the grain yield and the phosphorus utilization efficiency in responses to phosphorous （P） fertilizer and the interaction between cultivation methods and P levels in upland rice and paddy rice. One japo- nica upland rice cultivar Zhonghan 3 and one japonica paddy rice cultivar Yangfujing 8 were grown under the moist cultivation （MC, control） or bare dry-cultivation （DC） with low amount of P （LP, 45 kg ha-1）, normal amount of P （NP, 90 kg ha-1）, and high amount of P （HP, 135 kg ha-1）. Under DC, with the increase of P level, both upland rice and paddy rice significantly increased grain yield and P accumulation, and upland rice showed a significant decrease and paddy rice had no difference in P use efficiency of matter production and P use efficiency of grain yield production. Under MC, there was no significant difference in grain yield, P accumulation amount, and P use efficiency of grain yield production.There was a significant decrease in P use efficiency of matter production between HP and NP for the upland rice, but the grain yield and P accumulation at HP were lower than at NP, there was no significant difference in P use efficiency of matter production and P use efficiency of grain yield production between HP and NP for paddy rice. When compared with MC, DC showed less number of adventitious roots, lower P accumulation amount, higher P use efficiency of matter production, lower P use efficiency of grain yield production, and lower grain yield for both upland and paddy rice with more reduction in grain yield for upland rice than for paddy rice. Compared with paddy rice, upland rice showed less number of adventitious roots, lower P accumulation amount, fewer panicles, higher seed setting rate and higher 1000-grain weight, lower grain yield, higher P use efficiency of matter production and higher P use efficiency of grain yield production. Upland rice showed a faster declining in chlorophyll content （SPAD value） of the flag leaf after anth

关 键 词：陆稻 水稻 旱种 磷素利用 产量 

分 类 号：S511[农业科学—作物学]