| 嘉早935水稻覆膜旱栽的物质积累及运转研究 |
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| 引用本文： | 程旺大,张国平,赵国平,姚海根,王润屹.嘉早935水稻覆膜旱栽的物质积累及运转研究[J].作物学报,2003,29(3):413-418. |
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| 作者姓名： | 程旺大 张国平 赵国平 姚海根 王润屹 |
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| 作者单位： | 浙江大学农业与生物技术学院农学系,浙江杭州,310029 |
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| 基金项目： | 国家财政部“财政支农”项目，浙江省科技厅“九五”重点项目 ( 9810 0 4，990 10 6) |
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| 摘 要： | 对嘉早935水稻覆膜旱作与常规水作栽培的干物质积累、运转及N、P、K的积累、利用进行了比较研究.结果表明,虽然旱作水稻灌浆结实期茎叶干物质向穗部的分配比例较高,茎叶干物质输出率、表观转换率和收获指数高于水作水稻,但孕穗后特别是齐穗～成熟期干物质积累量较低,最终粒重和产量明显低于水作.旱作水稻孕穗前N积累较快,而齐
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| 关 键 词： | 水稻 覆膜旱作栽培 养分 干物质 |
| 收稿时间： | 2001-11-21 |
| 修稿时间： | 2001年11月21 |
Differences in Accumulation and Translocation of the Nutrients and Dry Matter between Dry and Paddy Cultures of Rice Cultivar Jia-Zao 935 |
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| CHENG Wang Da , ZHANG Guo Ping ZHAO Guo Ping YAO Hai Gen WANG Run Yi.Differences in Accumulation and Translocation of the Nutrients and Dry Matter between Dry and Paddy Cultures of Rice Cultivar Jia-Zao 935[J].Acta Agronomica Sinica,2003,29(3):413-418. |
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| Authors: | CHENG Wang Da ZHANG Guo Ping ZHAO Guo Ping YAO Hai Gen WANG Run Yi |
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| Institution: | CHENG Wang Da 1,2 ZHANG Guo Ping 1 ZHAO Guo Ping 1 YAO Hai Gen 2 WANG Run Yi 2 |
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| Abstract: | The comparative experiments were conducted to study the difference between dry cultivation with mulching plastic film (DC) and conventional paddy cultivation (PC) in dry matter accumulation and translocation, and nutrient uptake and utilization of rice cultivar Jia Zao 935. The results showed that DC had the higher proportion in re translocation of assimilates stored in stem and leaf into panicles at grain filling stage, and apparent transformation rate of dry matter in stem and leaf, and harvest index, as compared with that of PC, but smaller dry matter accumulation after booting, particularly during the heading to maturing, finally leading to lower grain weight and yield. The relatively more N accumulation was found in DC before booting, but after that N as well as P and K accumulation was markedly smaller than that in PC. DC had the higher N, P and K accumulation percentage at the early growth stage, but lower at the middle and late growth stages. Moreover the plants in DC showed smaller mean accumulation rate of N, P and K in the whole growth period. The results also showed that the grain yield was significantly positively correlated with the dry matter and nutrient accumulation at heading and maturing stages. |
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| Keywords: | Rice( Oryza sativa L ) Dry cultivation with mulching plastic film Nutrient Dry matter |
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