对受笋万纹象(O tid ogna thus rubricep s Chevro lot)、一字竹笋象(O.d av id is F a irm a ire)、大竹笋象(Cy rta trachelus long im anus F abric ius)危害后断梢毛竹、竹腔注药防治后毛竹、正常毛竹3种竹材进行竹材抗弯强度、抗...对受笋万纹象(O tid ogna thus rubricep s Chevro lot)、一字竹笋象(O.d av id is F a irm a ire)、大竹笋象(Cy rta trachelus long im anus F abric ius)危害后断梢毛竹、竹腔注药防治后毛竹、正常毛竹3种竹材进行竹材抗弯强度、抗弯弹性模量和顺纹抗拉强度测定结果表明,与正常毛竹相比较,受竹笋象危害断梢毛竹差异显著,3个竹材物理力学性质指标分别下降了43.79%、39.01%、29.28%,竹腔注药防治后毛竹3个指标下降了13.87%、10.95%、9.01%,但差异不显著,不影响竹材的使用价值。展开更多
The result of integrated control against Otidognathus rubriceps was reported in the paper. Spraying the bamboo at 9～10 am. during the peak of the adult who oviposited going up to the bamboo, adopting the 20% of the e...The result of integrated control against Otidognathus rubriceps was reported in the paper. Spraying the bamboo at 9～10 am. during the peak of the adult who oviposited going up to the bamboo, adopting the 20% of the emulsifiable solution of fenvalerate 1000 time’ solution, spraying again after 5 days, the control effect was higher than 90 percent. The highest rate of infecting the larva with insect’s pathogenic nematode in lab was Steinernema carpocapsae Beijing, the corrected mortality was 51.35% after 10 days when it was treated. The control effect reached 42.56～66.08% if it was sprayed by different strains of nematodes in the dosage of 2×10 5·m -2 on the ground of forest. Beauveria bassiana had a poor infected effect on the larva, which is 32.43% of corrected mortality after 15 days. Spraying the power of B. bassiana on the ground before the larva going down could reduce the new bamboo’s injured rate by 12.52% the next year, and reached 29.21% of control effect. Shaking the tips before the peak of the larva going down could reduce the hibernating population, the control effect reached 89.44%. The adult was caught by manual, comparing with the comparative stand, the injuring rate of the one-year-old bamboo declined by 43.74% and the control effect was 64.50%. Reclaiming the land deeply had a certain effect on Otidognathus rubriceps in winter, but it was better doing it after the larva going down ( in the middle of May ), the injuring rate of the one_year_old bamboo descented by 60.00%, and control effect was 87.84%.展开更多
文摘对受笋万纹象(O tid ogna thus rubricep s Chevro lot)、一字竹笋象(O.d av id is F a irm a ire)、大竹笋象(Cy rta trachelus long im anus F abric ius)危害后断梢毛竹、竹腔注药防治后毛竹、正常毛竹3种竹材进行竹材抗弯强度、抗弯弹性模量和顺纹抗拉强度测定结果表明,与正常毛竹相比较,受竹笋象危害断梢毛竹差异显著,3个竹材物理力学性质指标分别下降了43.79%、39.01%、29.28%,竹腔注药防治后毛竹3个指标下降了13.87%、10.95%、9.01%,但差异不显著,不影响竹材的使用价值。
文摘The result of integrated control against Otidognathus rubriceps was reported in the paper. Spraying the bamboo at 9～10 am. during the peak of the adult who oviposited going up to the bamboo, adopting the 20% of the emulsifiable solution of fenvalerate 1000 time’ solution, spraying again after 5 days, the control effect was higher than 90 percent. The highest rate of infecting the larva with insect’s pathogenic nematode in lab was Steinernema carpocapsae Beijing, the corrected mortality was 51.35% after 10 days when it was treated. The control effect reached 42.56～66.08% if it was sprayed by different strains of nematodes in the dosage of 2×10 5·m -2 on the ground of forest. Beauveria bassiana had a poor infected effect on the larva, which is 32.43% of corrected mortality after 15 days. Spraying the power of B. bassiana on the ground before the larva going down could reduce the new bamboo’s injured rate by 12.52% the next year, and reached 29.21% of control effect. Shaking the tips before the peak of the larva going down could reduce the hibernating population, the control effect reached 89.44%. The adult was caught by manual, comparing with the comparative stand, the injuring rate of the one-year-old bamboo declined by 43.74% and the control effect was 64.50%. Reclaiming the land deeply had a certain effect on Otidognathus rubriceps in winter, but it was better doing it after the larva going down ( in the middle of May ), the injuring rate of the one_year_old bamboo descented by 60.00%, and control effect was 87.84%.
