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利用裂区试验研究了播种期和种植密度对小麦新品种豫农202产量及其构成因素的影响。结果表明:播种期对豫农202的产量及其构成因素影响较小,除对亩穗数的影响达显著水平外,其它均不显著。种植密度则影响较大,除对千粒重的影响不显著外,其它均达到显著或极显著水平,特别是对亩穗数和穗粒数影响的显著程度非常高。在不同的播种期下各种植密度间产量差异较大,但产量构成因素差异较小。该品种的适宜播种期应该在10月8日至10月25日,早播情况下选择8万/亩基本苗较合适,中晚播情况下选择16万/亩。
The effects of sowing date and planting density on the yield and its components of a new wheat cultivar ’Yunnong 202’ were studied by split-plot test. The results showed that the sowing date had little effect on the yield and its components of YN 202, except for the significant impact on the number of ears per acre. The planting densities had a greater impact, except for the effects on 1000-grain weight were insignificant, all of which reached significant or extremely significant levels, especially on the number of ears per panicle and grains per spike. Under different sowing dates, the yields of different planting densities differed greatly, but the differences of yield components were small. The appropriate sowing date for the variety should be from October 8 to October 25, and the selection of 80,000 / mu basic seedlings for early sowing is more appropriate, and 160,000 / mu for mid-late sowing.