胡萝卜“3414”肥效试验

Experiment on fertilizer effect of "3414" trial design for carrot

对胡萝卜进行"3414"施肥试验,结果表明:在土壤有效磷含量丰富,碱解氮、速效钾含量缺乏的地块,施用氮肥、钾肥可以显著提高胡萝卜产量。本地块胡萝卜每667 m2最高产量施肥量为N 18.75 kg、P2O58.17 kg、K2O 36.26 kg,最高产量为2 673.71 kg。

Trial of fertilizer efficiency to carrot was carried out based on 3414 design. The results showed that when the field was abundant in available phosphorus, deficient in available nitrogen and potassium, the application of nitrogenous and po- tassium fertilizer could significantly promote the yield of carrot. And in this trial field, the amount of fertilizers application to get maximum carrot yield were N 18.75 kg/667 m2（281.25 kg/hm2）, P2O5 8.17 kg/667 m2（122.55 kg/hm2）, K2O 36.26 kg/667 m2 （543.9 kg/hm2） respectively, and the maximum carrot yield was 2673.71 kg/667 m2 （40105.65 kg/hm2 ）.