The induced disease appears as the difference of emergence rate by artificial inoculation in glasshouse, indicate the lose of sprouting ability and pre-emergence damping off.
在温室病原诱发接种条件下，发病表现为出苗率的差异，即丧失发芽能力或出苗前的猝倒。
2
Biological activities of a herbicidal compound JS913 to barnyard grass and corn in soils with different sand or water content were studied by pre-emergence watering application method.
采用浇灌法分别测定了不同土壤含沙量和含水量条件下JS913对稗草的除草活性和对玉米的安全性。
3
The major difference this year is the emergence of additional iPhone competitors, including Palm’s Pre.