在大田条件下研究了杂草稻WR0312对移栽稻沈农265的产量及稻田环境的影响。结果表明, 当栽培田中杂草稻密度超过3株/m2时，移栽稻沈农265的单株穗数、每穗粒数、结实率和千粒重极显著降低，产量极显著下降；移栽稻群体在8：00和16：00时中（80 cm）、下部（40 cm）照度极显著弱于对照，群体透光率降低；日平均气温、白天平均气温和日最高气温极显著降低；群体日平均湿度、白天平均湿度和日最高湿度显著升高。杂草稻密度增大导致栽培稻群体透光率降低，群体湿度加大，稻田群体环境恶化，最终导致减产。
关键词：
杂草稻; 移栽; 产量; 稻田环境; 竞争
Effects of weedy rice on transplanted rice and paddy environment were investigated in a field experiment with weedy rice WR0312 and cultivated rice Shennong 265 as materals. It showed that at a weedy rice density over 3 plants per square meter, panicle number per plant, grain number per panice, seed setting rate, 1000grain weight and yield of Shennong 265 significantly decreased. The illuminance in the middle(80 cm)to lower part(40 cm)of the population of Shennong 265 was dramatically weaker than those of control at 8:00 am and 4:00 pm. In addition, the daily average and maximum humidity increased significantly. The rising density of weedy rice led to the decline of population light transmittancand, increase of population humidity in cultivated rice, resulting in the environmental deterioration and the decline of yield.
\[1\]马殿荣. 杂草稻遗传多样性及其对稻田生态系统影响的研究\[D\]. 沈阳: 沈阳农业大学, 2009.
\[2\]Suh H S， Sato Y I， Morishima H. Genetic characterization of weedy rice（Oryza sativa L.）based on morphophysiology isozymes and RAPD makers.Theor Appl Genet, 1997, 94:316321.
\[3\]FAO. Report of the Global Workshop on Red Rice Control. Varadero， Cuba， 30 August3 September， 1999： 55149.
\[4\]Delouche J C, Burgos N R, Gealy D R, et al. Weedy Rice: Origin, Biology, Ecology, and Control.Rome:FAO Plant Production and Protection Paper 188，2007: 313.
\[5\]Vaughan D A，Watanabe H，HilleRisLambers D， et al. Weedy rice complexes in direct seeding rice cultures//Proceedings of the International Symposium on World Food Security， Kyoto，Japan， 1999:277280.
\[6\]Watanable H，Vaughan A，Tomooka N. Weedy rice complexes: Case studies from Malaysia，Vietnam，and Surinam//Baki B B, Chin D V, Mortimer M. Proceedings of Wild and Weedy Rice in Rice Ecosystems in Asia: A Review.Los Baos, Philippines International Rice Research Institute， 2000:2534.
\[7\]Gealy D R, Bryant R J. Seed physicochemical characteristics of fieldgrown US weedy red rice (Oryza sativa) biotypes: Contrasts with commercial cultivars. J Cereal Sci, 2009, 49: 239245.
\[8\]Sun J, Qian Q, Ma D R, et al. Introgression and selection shaping the genome and adaptive loci of weedy rice in northern China. New Phytol, 2013, 197(1): 290299.
\[9\]马殿荣， 李茂柏， 王楠， 等．中国辽宁省杂草稻遗传多样性及群体分化研究． 作物学报， 2008， 34（3）： 403411.
\[10\]Kwon S L, Smith R J. Interference and duration of red rice (Oryza sativa L.)in rice (Oryza sativa). Weed Sci, 1991, 39: 363368.
\[11\]Fischer A J, Ramirez A. Red rice (O. sativa): Competition studies for management decisions. Int J Pest Manag, 1993, 39: 133138.
\[12\]张峥， 戴伟民， 章超斌， 等. 江苏沿江地区杂草稻的生物学特性及危害调查. 中国农业科学, 2012, 45(14): 28562866.
\[13\]Londo J P, Schaal B A. Origins and population genetics of weedy red rice in the USA. Mol Ecol, 2007, 16: 45234535.
\[14\]Ottis B V, Smith K L, Scott R C, Talbert R E. Rice yield and quality as affected by cultivar and red rice (Oryza sativa) density. Weed Sci, 2005, 53: 499504.
\[15\]Diarra A, Smith R J, Talbert R E. Interference of red rice (Oryza sativa L.) with rice (O. sativa). Weed Sci, 1985, 33(5): 644649.
\[16\]Eleftherohorinos I G, Dhima K V, Vasilakoglou I B. Interference of red rice in rice grown in Greece. Weed Sci, 2002, 50: 167172.
\[17\]Pantone D J, Baker J B, Jordan P W. Pathanalysis of red (Oryza sativa L.) competition with cultivated rice. Weed Sci, 1992, 40: 313319.
\[18\]Estorninos L E, Gealy D R, Talbert R E. Growth response of rice (Oryza sativa) and red rice (O. sativa) in a replacement series study. Weed Technol, 2002， 16（2）： 401406.
\[19\]宋冬明， 马殿荣， 杨庆， 等. 杂草稻对栽培粳稻产量和品质及群体微生态环境的影响. 作物学报， 2009, 35(5): 914920.
\[20\]孙兴强， 周勇军， 陆永良， 等. 两种生物型江都杂草稻不同栽播密度对水稻生长的影响及其与栽培稻的亲缘关系.中国水稻科学， 2012, 26(1): 118122.
\[21\]Ferrero A, Vidotto F, Balsari P, Airoldi G. Mechanical and chemical control of red rice (Oryza sativa L. var. sylvatica) in rice (Oryza sativa L.) preplanting. Crop Prot, 1999, 18: 245251.
\[22\]Smith R J．Weed thresholds in southern U.S. rice， Oryza sativa．Weed Technol， 1998, 2: 232241.
\[23\]Watanable H, Azmi M, Ismail M Z. Ecology of major weeds and their control in direct seeding rice culture of Malaysia. MARD/MADA/JIRCAS collaborative Study Report(199296), 1996： 202.
\[24\]Burgos N R, Norman R J, Gealy D R, et al. Competitive N uptake between rice and weedy rice. Field Crops Res, 2006, 99: 96105.
