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在水肥较好的情况下,创造并推广矮杆小麦品种是大幅度提高产量的重要因素。但矮杆品种抗杂草能力弱,在复土深、土壤表层水分不足或播种后土壤板结时易缺苗;随植株增高田间种子发芽率也提高。在有利捉苗的情况下,田间种子发芽率和株高之间的关系表现就不明显。显然,发芽率的这种差异影响矮杆品种的产量。分析造成矮杆品种和突变体减产的原
In the case of better water and fertilizer, to create and promote the short bar wheat varieties is an important factor in significantly increasing the yield. However, the weeds of short dwarf varieties are weak in weed resistance, and are easy to seedlings when soil depth is deep, soil surface moisture is insufficient, or soil compaction after sowing; the seed germination rate also increases with the increase of plants. In the case of favorable seeding, the relationship between germination rate and plant height in field is not obvious. Obviously, this difference in germination rate affects the yield of dwarf varieties. Analysis of the original dwarf bar varieties and mutants