搜索结果: 1-3 共查到“农学 population growth”相关记录3条 . 查询时间(0.218 秒)
Migration and Population Growth of the Pine Wood Nematode (Bursaphelenchus xylophilus) Related to the Symptom Development in the Seedlings of Japanese Black Pine (Pinus thunbergii) Families Selected as Resistant to Pine Wilt
breeding Bursaphelenchus xylophilus pine wilt resin canal resistance
2009/8/27
To obtain the pine trees with high resistance to the pine wilt from susceptible species, the criteria for selective breeding should be made based on the inhibition factors of symptom development. Migr...
Effect of Cropping System on Arbuscular Mycorrhizal Fungal Population, Growth and Yield of Succeeding Crop on Andosol in Central Region of Japan
Arbuscular mycorrhizal fungi Cropping system Corn Soybean
2009/7/9
The effect of the cropping system on arbuscular mycorrhizal fungi, growth and yield of succeeding corn or soybean were studied over the rainy season on Andosol field in Ibaraki, Japan, since a high s...
Effect of sorghum cultivars on population growth and grain damages by the rice weevil, Sitophilus oryzae L.（Coleoptera：Curculionidae）
Sorghum bicolor stored products Sitophilus oryzae Cameroon
2009/3/4
In northern Cameroon, the rice weevil, Sitophilus oryzae L. (Coleptera: Curculionidae) is a major pest of Sorghum bicolor (Poaceae) during storage. This staple crop is currently damaged by many inse...