施磷量对花生生长发育动态和产量的影响

Effects of Phosphorus Fertilization on Dynamic Growth and Development and Yield Components of Peanut

在大田试验条件下,研究了施磷量对花生生长发育动态和产量的影响,以期为花生高产高效施肥提供依据。结果表明,花生主茎高度、侧枝长度随着施磷量的增加而升高,但当施磷量高于225 kg/hm2时,再增加施磷量对主茎高度、侧枝长度的促进作用不明显。增施磷肥增加了花生主茎和侧枝的节数,促进了花生分枝的发生,提高了花生叶面积系数。适当增施磷肥可以提高花生茎叶干物质积累量,增加荚果产量,但当磷肥施用量超过225 kg/hm2时,增产效果不显著。

Field experiment was conducted to investigate the effects of phosphorus fertilization on dynamic growth and development and yield of peanut ,in order to provide the basis for the fertilization of peanut to achieve high yield and efficiency .The results showed that the height of main stem and the length of lateral branch of peanut were increased with the increase of phosphorus fertilization .However,when the rate of phosphorus fertilization was higher than 225 kg/ha , further increasing the phosphorus fertilization , the promotion effect on the height of main stem and the length of lateral branch of peanut was not obvious .Increasing application of phosphate fertilizers can increase the node number of main stem and lateral branches of peanut , and promote the occurrence of peanut branching .Increasing application of phosphate fertilizers improved the LAI ( Leaf area index ) of peanut .Appropriate-ly increasing in phosphate fertilizer can increase the dry matter accumulation of stems and leaves of peanut .Increas-ing application of phosphate fertilizers can increase the pod yield of peanut .If the rate of phosphorus fertilization was more than 225 kg/ha,the effect of yield increasing was not significant .