氮磷肥施用量对小麦后代发芽率的影响

为研究施肥因素对小麦后代发芽率的影响,进行了氮磷肥不同用量的田间试验,并对收获种子进行了发芽率试验。经过数理统计分析得到如下研究结果:1.只施不同量级氮肥,其小麦后代发芽率均比对照(不施肥)减少,(?)=121.924X~(0.159)曲线型呈负相关,每亩施5公斤氮肥时发芽率受影响不显著。2.只施不同量级磷肥,其小麦后代种子发芽率均比对照减少,当每亩施15公斤磷肥时发芽率受影响不显著。3.施氮磷不同量级配比,其后代小麦种子发芽率均比对照减少,当N:P为3:6时,其发芽率影响不显著。

THE EFFECT OF THE AMOUNT OF APPLYING NITOGENOUS AND PHOSHORUS FERTILIZER ON THE GERMINATION RATIO OF WHEAT OFFSPRING

For knowing the effects of the amount of applying nitrogenous and phosphorus fertilizer on the germination ration of wheat offspring , The field experiments had been made on its different amounts. And then germination test was carried out on the harvested seed. In accordance with the statistical analysis the results were as follows . 1 . The germinating ratio of the wheat offspring declined in comparison with the control group(without applying any fertilizer) when only different amount of nite- rogen fertiher was applied.The decline negatively followed y =121.924x-0.159 and the effect was not obvious when the amount of Nitrogen fertilizer was below 5 kilograms per mu, 2 . The germinating ratio declined in comparison with the control group when only different amount of phosphorus fertilizer was applied, and the effect was not obvious when its amount was below 15 kilograms per mu. 3 . The germinating ratio comparatively declined if different amount of Nitrogen and phosphorus fertilizer were applied, but the decline was not obvious when the ratio of Nitrogen and phosphorus 3 vs 6.