科尔沁沙地种植不同作物与施肥对农作物生物效应的影响

INFLUENCES OF DIFFERENT FARMING PLANTS AND FERTILIZER-APPLYING QUANTITIES UPON CROPS BIOLOGY EFFECT IN KERQIN SANDY REGION

就种植不同作物和施用不同肥料对科尔沁沙地地力恢复以及施肥对农作物产量的影响进行研究，结果表明，科尔沁沙地比较贫瘠，土壤养分含量较低，施肥效应明显，籽实产量、生物产量和植物株高是施肥２０ｋｇ＞１５ｋｇ＞１０ｋｇ＞对照，磷肥效应高于氮肥效应．

in this paper, the crops productivities were researched in Kerqin Sandy Region withdifferent farming plants and fertilizer-applying quantities, and the recovering ability of soilfertility was discussed. The results showed that, in this region, the fertility is poor, soil nutrientis low and fertilizer-applying has obvious effect. Considering from the quantities of seed forming,plant productivity and the height of crops, the order of effect abou fertilizer applying quantities is20 kg>15 kg>10 kgb no fertilizer applying per 0. 0667hectares. the phosphorus fertilizer has astrong effect than nitrogen. Both fertilizer-applying and crops planting have good effects for soilnutrient recoyering.