Effects of fertilizer on the. sexual reproduction of Leymus chinensis
Leymus chinensis is the dominant species of eastern Eurasia steppes. However, it produces few seeds and has weak sexual reproduction in natural conditions, thus severely restricting its artificial utilization. Fertilization could be an efficient method for enhancing seed yield. We investigated the effects of nitrogen, phosphorus and potassium applied at various growth stages on heading percentage, seed-setting percentage and seed yield by orthodox design experiments. Nitrogen, phosphorus and potassium had no significant effect on heading percentage or heading number but did significantly enhance the seed-setting percentage and seed number. The effects of early application of nitrogen and potassium on setting and seed yield were more obvious. Using range analysis, we conclude that early application of 120 kg/hm2 urea and 100 kg/hm2 vitriol potassium (superphosphate) is theoretically the best combination.
Leymus chinensisN, P and K fertilizefertilize timesexual reproduction
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维普
