The results showed that when organicnitrogenfertilizer was applied, the plant height was lower and leaves were smaller, while the photosynthetic rate was higher in the latter stage of growth.
结果表明，施有机氮肥较无机氮肥处理的烟株，植株矮，叶片小，但生长后期叶片光合速率较高。
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Simulated composting was carried out to study the changes of biochemistry and chemical characteristics of the organic manure compost using labelled organic material and inorganic nitrogenfertilizer.
For the future we should attach importance to organicfertilizer on farmland, control the dosage of nitrogen fertilizer, increase the proportion of phosphorus and add kalium fertilizer properly.