Micro plottrial was carried out to study the effect of K application on dry matter accumulation and the content and the absorption of K, ca and Mg of oil rape.
采用池栽土培试验研究了钾对不同生育期油菜干物质积累量和钾、钙、镁含量及吸收量的影响。
2
Sand culture trial and rain-proof mini-plot rial both proved phosphorous had remarkable effect on improving plant's photosynthesis efficiency.
砂培和防雨微区试验都证明磷对提高作物光合效率有显著作用。
3
The effects of five kinds microbial fertilizer on tobacco were studied by plottrial.