In 1987 and 1988, the effects of some cultural methods on pho- tosynthesis of Chinese jujube(Zizyphus jujuba Mill.) were studied with infra-red CO_2 analyser.

 
  • 于1987、1988年采用红外CO_2分析仪研究了某些栽培措施对枣树光合作用的影响。
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