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生态学杂志 ›› 1995, Vol. ›› Issue (3): 5-9.

• 研究报告 • 上一篇    下一篇

土壤含水量与头季稻和再生稻产量的关系

熊洪1, Sombat Chinawong2   

  1. 四川省农科院水稻高粱所, 泸州646100
  • 收稿日期:1994-02-10 修回日期:1994-08-15 出版日期:1995-06-10

Relationship Between Soil Water Content and Rice Yield of Main Crop and Ratoon Crop

Xiong Hong1, Sombat Chinawong2   

  1. 1. Rice and Sorghum Research Institute, Sichuan Academy of Agricultural Science, Luzhou 646100;
    2. Kasetsart Unitversity, Bangkok, Tailand 73140
  • Received:1994-02-10 Revised:1994-08-15 Online:1995-06-10

关键词: 环境持续性, 城市可持续发展, 决策与试验评价实验室(DEMATEL)方法

Abstract: In this study,rice was subjected to 16% and 21% of soil water content from 15 DBH(days be-fore harvest)to 13 DAH(days after harvest).The results show that:(1)the dormant buds were more sensitive to soil water content at 15 DBH than at 13 DAH. Rice yield of ratcon crop de-creased with decreasing soil water content;(2)survival rate of dormant buds and regenerated tillers and rice yield decreased with decreasing soil water content and days of water treatment;(3)yield reduction of main crop was caused by lower ripen grains and 1000-grain wt.;However,depression in grain yield of ratoon crop may be attributed to insufficient panicles in rice ratconing;(4)survival rate of dormant bud, regenerated tillers and yield of ratoon crop decreased sharply when the soil water content was lower than 21%,which may be regarded as critlcal soil water content to judge the effects of drought on rice ratooning from 15 DNH to l3 DAH.

Key words: environmental sustainability, urban sustainable development, decision-making and trial evaluation , laboratory (DEMATEL) method.