追N量及播量对BNS型杂交小麦产量的影响

Effect of nitrogen fertilizer rate and planting density on yield of BNS hybrid wheat varieties

为探讨BNS型杂交小麦的高产配套技术，试验采用正交设计方法，研究了BNS型杂交小麦的N肥追施量与播量对产量及成产因素的影响．结果表明：品种间的产量及成产因素有极显著差异，对越冬期的追N量也较为敏感，但品种与施N量互作对产量的影响不大．BNS型杂交小麦对播量的反应不敏感，说明其播量弹性较大，基本苗在9万。21万／666．7m2范围内，其产量差异不显著．通过方差分析可知，BNS型杂交小麦的最佳组合分别为：杂麦4号产量最高的组合为A1B4C4，即选择越冬期追施5．5kg纯N，保证18万基本苗；杂麦3号产量最高的组合为A2B2C4，即在18万基本苗的条件下越冬期追施2．5kg纯N；杂交小麦百杂1001产量最高的组合为A3B42C1，苗期仅需9万基本苗，追施2．5kg的纯N即可取得最好的产量．

Effects of N fertilizer and planting density on the yield and its factors of BNS hybrid wheat varities were studied in order to the integrate high-yield technique for BNS hybrid wheat,and the optimization test scheme was adopted.The results showed that the yield and its factors had evident difference in different varieties and more sensitive to nitrogen fertilizer rate during overwintering period,but the influence between varieties and nitrogen fertilizer rate on variety was not too important.The insensitivity of BNS hybrid wheat to planting density explained their elasticity of sowing quantities was bigger, the difference of yield was not significant within the scope of 9x]04~ 21 xl04 basic seedling per 666.7mZ.Through the variance analysis,the optimal combination of BNS hybrid wheat respectively：the highest yield combination of Zamai 4 was AIB4C4 which choosing 5.5 kg N and 18 xl04 basic seedling per 666.7m2; the optimal treatment of Zamai 3 was A2B2C4; the best combination of Baiza 1001 was A3B2C.