Static simulation of airflow distribution inside multi-span plastic greenhouse:influence of insect-proof screens on airflow inside greenhouse;
连栋塑料温室自然通风流场的稳态模拟——防虫网对温室内流场的影响
Research progress on application of insect-proof screens technology;
防虫网覆盖技术应用研究进展
8 rice cultivars were treated with insect-proof net covered and uncovered at seedling stage.
秧田期采用防虫网覆盖与不盖防虫网两种措施,对8个水稻品种进行试验研究,结果表明,防虫网可有效控制灰飞虱虫口数量,阻止带毒灰飞虱在秧田期对水稻的集中侵染,对防止大田条纹叶枯病发生效果极显著,能显著提高水稻产量。
The experiment result of the planting Chinese chives with the different size of insect-proof net Indicated that the adults of maggot were efficiently segregated by covering with 20 mesh, 30 mesh and 50 mesh insect-proof net, which decreased respectively the density of maggot larva by 74.
覆盖防虫网对韭蛆进行防控,结果表明:20目、30目、50目防虫网均可对韭蛆成虫起到有效的隔离作用,越冬韭蛆的虫口密度分别降低74。