葡萄施药量应随葡萄冠层生长期变化而相应变化。采用3种施药量调节模型,以达到在葡萄上合理施药的目的。3种模型分别为Unit Canopy Row(UCR)、Leaf Wall Area(LWA)和DOSAVI A。试验结果表明,对于早期葡萄,DOSAVI A和LWA两个模型的沉积量和传统的施药量处理间没有显著性差异;UCR、DOSAVI A和LWA三模型之间也没有显著性差异;在中期,LWA模型和传统的施药量处理在沉积量上仍没有显著性差异,而UCR模型所取得的沉积量显著小于其他3种处理;在后期,传统的施药量仍然取得了最大的沉降量。在所有的试验中,沉积分布(CV值)基本保持一致。
The grapevine canopy changes a lot along the growth season,so do the application rates.Three models were used with the aim to apply pesticides on grapevine rationally.The models mentioned were unit canopy row(UCR),leaf wall area(LWA),and DOSAVIA.The results showed that at early growth stage,the deposits for DOSAVIA,LWA and traditional method were not different significantly,neither for UCR,DOSAVIA and LWA;at middle growth stage,LWA method achieved the similar deposits to traditional,UCR got the minimum deposits;at the late growth stage,the traditional method had the maximum deposits than the others.Among all the trials at three growth stages,the distributions of deposits(CV)were very closed to each other.