叶绿素仪（SPAD-502）的出现使通过无损伤的田间速测对作物进行氮营养诊断成为可能。
The SPAD-502 chlorophyll meter appears promising for rapid, on-farm analysis of crop nitrogen status.
在田间软组织损伤的运动体系还有不同的方法及诊断结果。
In the field of soft tissue lesions of the locomotor system there are several different ways to reach a diagnosis.
采用简单的试验和研究方法在田间条件下研究了叶绿素仪应用于夏玉米氮营养诊断的可行性。
The feasibility of readings of SPAD-502 on the nitrogen nutritional diagnosis of corn was studied through a simple field experiment and research method under field condition.
通过水培试验，研究三七在缺素营养溶液中的生长状况，为三七营养元素缺乏的田间快速诊断提供参考。
The growth and development of Sanqi in the lack of nutritional elements had been done by the water culture.
通过水培试验，研究三七在缺素营养溶液中的生长状况，为三七营养元素缺乏的田间快速诊断提供参考。
The growth and development of Sanqi in the lack of nutritional elements had been done by the water culture.
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