【摘要】 在农作物的产量形成中,土壤肥力起着重要的作用,地力产量所占比例约在70%左右.产量越高,地力产量的比重越大.经过四年研究,获得了用地力产量估测目标产量的回归方程;同时也获得了用有机质、碱解氮和有效磷等三个土壤养分性状估测地力产量的回归方程.应用这两个方程对小麦的目标产量进行估测,结果与实际产量比较符合,可用于测土施肥技术中的施肥推荐模型.更多还原

【Abstract】 Fertility is essential forming about 70 % of wheat grain yield .The following two regressive equations were obtained from our research : Y0 = - 720- 692 + 230. 669 lnX2+ 5. 396 X3; YA= 258- 576 + 0. 8 18 Y0 .These equations may be used as the approaches for predicting target yield of wheat crop as well as the basis for establishing a model of fertilizer iccommentation.更多还原