摘要
通过对紧凑型玉米掖单１３氮、磷、钾元素吸收和分配规律的研究，结果表明，玉米植株对氮、磷、钾元素的吸收积累速度，氮在拔节至喇叭口期、乳熟至成熟期出现两个高峰期，钾只在拔节至喇叭口期出现一个高峰期，磷呈缓慢上升趋势，到成熟期达最大值；全生育期中植株体内氮、磷、钾元素平均分配比例，以果穗最多，叶子和茎秆其次，根中最少；根、茎、叶中的氮、磷、钾元素后期向其它器官转移；每生产１００ｋｇ玉米籽粒需吸收Ｎ２．１３ｋｇ，Ｐ２Ｏ５１．１ｋｇ，Ｋ２Ｏ１．５１ｋｇ。
The results from studying on absorption and distribution patterns of N, P, K elements in the compact maize variety Yedan 13 showed that the absorption and accumulation speeds of N, P, K elements varied in different growth periods, that there were two peak stages for N element (from jointing stage to horn stage and from milky stage to mature stage), one peak stage for K element (horn stage) and the P element appeared slow rising trend and reached maximum value at the mature stage , the order of mean distribution ratio of N, P, K elements of the plant was the ear (maximum), the leaf and stem (median) and the root (minimum) at the total growth periods, the N, P, K elements of the root ,stem and leaf were translated into the other organs at the late growth period, and 2.13 kg N, 1.10 kg P 2O 5 and 1.51 kg K were absorbed to produce 100 kg maize grain.
出处
《贵州农业科学》
CAS
1999年第4期12-15,共4页
Guizhou Agricultural Sciences
基金
贵州省科技基金
关键词
紧凑型玉米
掖单13
氮
磷
钾
吸收规律
compact maize
Yedan 13
nitrogen
phosphorus
potassium
absorption pattern
