不同施磷方式对吉林省西部超高产玉米磷素吸收积累的影响

采用田间试验的方法,研究磷肥施用量相同的条件下,磷肥不同施用时期及分配比例对吉林省西部超高产玉米产量及磷素吸收积累的影响。结果表明,不同施磷方式对玉米产量和磷素吸收积累量有一定影响。施磷量一定的条件下,在玉米生育后期追施磷肥可有效提高产量,其中拔节期和喇叭口期均追肥处理产量达到13 706 kg/hm2,较一次性基施处理高0.82%;不同生育期各器官磷素积累量也相对较高,收获时期植株磷素吸收积累量为126.4 kg/hm2,高于其他各处理。从成熟期玉米植株磷素含量分配比例来看,拔节期和喇叭口期均追肥处理收获时期子粒中磷素含量占植株总磷素含量的68.99%,其他处理均超过70%;除子粒外其余各器官磷素含量所占比例均较高。本试验条件下,在玉米生育后期追施磷肥的施磷方式可有效提高玉米产量,但相对于磷肥一次性基施的方式差异不显著。

Effects of Different Applications of Phosphorus on Absorption Accumulation of Super High-yield Corn's Phosphorus in Western Jilin Province

A field experiment was conducted to study under the same conditions of phosphate fertilizer applica-tion time and the ratio of different fertilizer on maize of super high yield and phosphorus absorption accumulation in western part of Jilin province. Different ways of phosphorus have effects on maize yield and the accumulation of phosphorus. When the total amount of phosphorus is fixed, chasing P fertilizer can effectively improves the produc-tion in late corn breeding, P6 process which yields jointing and trumpet stage were dressing reaches 13 706 kg/ha, compared with one-time process-based application P1 high 0.82%, no significant difference. Each organ accumula-tion of phosphorus processing high yield at different growth stages is relatively high, the highest yield of P6 was 126.4 kg/ha, which was higher than the other treatments. From the point of view of maturity of maize plant phospho-rus element content distribution ratio, the highest yield processing phosphorus content of grain at a relatively low proportion of other treatments, compared, P6 processing harvest period of phosphorus in grain element content ac-counted for phosphorus content of 68.99%, other treatments was higher than 70%. By the experiment, ways to chase P fertilizer phosphorus can improve corn production in the late growth of corn, but relative to phosphate one-time basal way of no significant difference.