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以先玉335为试验材料,采用不同垄作方法、种植密度及施氮量对玉米产量及产量构成因素进行了研究。结果表明:不同耕法中,产量依平播垄管、垄播垄管、平播平管次序递减,与平播平管产量相比,平播垄管与垄播垄管分别增产了34.22%和32.80%;在试验设置的密度区间内,呈现种植密度愈大产量愈低的变化趋势;氮肥用量在112.5kg/hm2和225kg/hm2时,可以获得较高产量,不施氮和施氮量过大都会使产量降低。耕作方法、密度与氮肥可有效调控玉米的干物质积累动态,耕作方法配合适宜的密度与氮肥是确保合理干物质积累量动态的前提,也是高产形成的重要保证。
Taking Xiangyu 335 as experimental material, the yield and yield components of maize were studied by different ridge cultivation methods, planting density and nitrogen application rate. The results showed that in different tillage methods, the yield increased by 34.22%, compared with that of flat-sheet flat-cropping. And 32.80%, respectively. Within the density range set in the experiment, the yield density showed the trend of the lower the yield. The nitrogen yield of 112.5kg / hm2 and 225kg / hm2 could achieve higher yield, Metropolis will reduce production. The tillage method, density and nitrogen fertilizer can effectively regulate the dynamic accumulation of dry matter of maize. Tillage method with suitable density and nitrogen fertilizer is the premise of ensuring the dynamic of reasonable dry matter accumulation, and also an important guarantee of high yield formation.