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小麦需肥的特性是制订合理施肥的主要依据。华南麦区对小麦需肥特性的研究尚未见诸报道。经我们研究,广东小麦每生产一百斤籽粒吸收NPK的数量中,需N量略高于其他麦区。不同生育期对三要素吸收量则具有从分蘖期到拔节期需N量较高,和灌浆期至成熟期需P量也较多等特点。因此,在施肥实践中应重视苗期追N和后期的增P。根据施N效应期较其他麦区早的特点,追N可在计划促进叶位前一叶龄时进行。
The characteristics of wheat to be fat is to formulate a reasonable basis for fertilization. The research on the fertility characteristics of wheat in South China wheat area has not been reported yet. According to our research, among the quantities of NPK absorbed by one kilogram of grain in Guangdong wheat, the amount of N required was slightly higher than that of other wheat areas. The absorption of three factors in different growth stages had the characteristics of higher N content from tillering stage to jointing stage and more P content from filling stage to mature stage. Therefore, in the fertilization practice should pay attention to the seedling chase N and later increaseP. According to the characteristics of N application period earlier than other wheat areas, chasing N can be carried out when planning to promote leaf leaf age before.