有机肥不同用量对瓜蚜和叶螨种群数量及黄瓜产量的影响

比较了有机肥不同用量对瓜蚜和叶螨种群数量及黄瓜产量的影响。结果表明,瓜蚜和叶螨种群数量随有机肥用量的增加而增加。高肥处理(12kg·m-2)的瓜蚜平均发生量为4.10头·株-1,是中肥处理(9kg·m-2)瓜蚜平均发生量的2.56倍,是低肥处理(6kg·m-2)瓜蚜平均发生量的5.13倍,是对照处理(0kg·m-2)瓜蚜平均发生量的8.20倍;高肥处理的叶螨平均发生量为101.1头·叶-1,分别是中肥、低肥、对照处理的1.51、2.76和2.73倍。黄瓜产量与有机肥用量有关,小区前期产量随有机肥用量的增加而增加,3个施肥处理的小区总产量均显著高于对照。

Effects of Different Amount of Organic Fertilizer on Populations of Aphis gossypii Glover and Tetranychus urticae Koch and the Yield of Cucumber

The effects of different level of organic fertilizer on Aphis gossypii and Tetrartychus urticae populations and yield of cucumber were investigated. The results showed that the number of A. gossypii and T. urticae populations increased when the application of organic fertilizer increased. The average number of A. gossypii in the high fertilizer treatment plot was 4.10 per plant,which was 2.56 times,5.13 times and 8.20 times compared to that of middle,low and control treatment respectively. The average number of T. urticae of the high fertilization treatment was 101.10 per leaf,which was 1.51 times, 2.76 times and 2.73 times compared to that of middle, low and control treatment respectively. The yield of cucumber was positively related to the application level of organic fertilizer. The early yield increased with the amount of organic fertilizer and the cucumber yields of the three fertilizer treatments were significantly higher than that of control treatment, but there was no significant difference in the total yield among them.