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为明确泽漆(Euphorbia helioscopia L.)的发生对小麦产量及其构成因素的影响,采用人工接种结合田间自然出草进行泽漆不同密度对小麦为害损失试验。1995～1996年研究结果表明,泽漆发生密度和小麦产量及穗数损失率的最佳数学模型均为直线函数关系,方程分别为:Y′=-0.3918+1.519X,Y_1′=2.232+1.553X。泽漆的发生为害对小麦穗粒数、千粒重的影响不显著。经济阈值计算结果表明,用使它隆进行防除,泽漆发生密度达3.0株/m~2以上时,才需用药;而用复配剂3号,泽漆密度达1.1株/m~2时就需用药防治。
In order to clarify the influence of Euphorbia helioscopia L. on the yield and its components of wheat, we used artificial inoculation combined with the natural drafting of the field to test the damage of wheat at different densities. The results from 1995 to 1996 showed that the best mathematic models for the density of Ze finish and the loss rate of spike yield were all linear functions, the equations were: Y ’= - 0.3918 + 1.519X, Y_1’ = 2.232 + 1.553 X. The occurrence of Ze lacquer had no significant effect on the number of grains per spike and 1000-grain weight. The economic threshold calculation results show that when it is used to control it, the lacquer density is up to 3.0 plants / m ~ 2 or more, and the medicine is needed only when the density is up to 1.1 plants / m ~ 2 Need medication prevention and treatment.