【摘要】 以不同的施氮水平对豫南地区粳稻产量和豫粳6号产量结构的影响进行试验。结果表明,施氮水平以每公顷施375kg纯氮下产量结构最为协调,每公顷产量较高,为7080.0kg,比对照增产718.5kg,增11.3%,是豫南地区粳稻超高产种植适宜的施氮水平。更多还原

【Abstract】 There were 5 levels in this study. They were 225,300,375,450,525 kg/ hm2 N fertilizer, respectively and the N fertilizer was used 60%,20%,20% as base fertilizer, tillering fertilizer, panicle-spikelet fertilizer. The P and K fertilizer were all used as base fertilizer with N∶P∶K=1∶0.3∶0.4. The level 1 was control, and Yujing No. 6 was tested variety. The results showed that 375 kg / hm2 was the best fertilizing levels of Japonica rice in the southern region of Henan province based on the analysis of yield and comparing of yield components.更多还原