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在斯图加特、阿肯色地区的条播水稻(Oryza sativa)L. ’Lebonnet’)最适宜的群体是每平方米215～270株。由于每平方米受丛生千金子[Leptochloa fascicularis(Lam.)Gray]11、22、54和108株的侵害,使水稻分别减产9、18、30和36％。每平方米内的每株丛生千金子使稻谷呈直线减产每公顷21公斤。每平方米有54和108株丛生千金子,会使水稻完整米产量降低;并且每平方米108株的杂草密度会降低水稻种子的发芽率。每株丛生千金子幼苗所产生的穗数随密度的增加而减少。
In Stuttgart, the most suitable population for Oryza sativa L. ’Lebonnet’ in Arkansas is 215-270 plants per square meter. Due to 11, 22, 54 and 108 strains of Leptochloa fascicularis (Lam.) Gray per square meter, rice yield was reduced by 9, 18, 30 and 36% respectively. The per hectare of gold per square meter caused a linear decrease in rice of 21 kg per hectare. There were 54 and 108 strands of gold per square meter, which would reduce the yield of rice in complete rice; and the weed density of 108 plants per square meter would reduce the germination rate of rice seeds. The number of spikes produced by the seedlings per cluster centipede decreased with increasing density.