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利用玉米杂交优势,是提高玉米单位面积产量的一项重要措施。近年来.我区推广杂交玉米良种对玉米增产起到举足轻重的作用。但由于现有当家品种使用年限过长,有的混杂退化,影响了产量的进一步提高.为了加速杂交玉米的推广及组合的更换更新,1985年我们从辽宁丹东市农科所引进了MO17Ht×丹340,复原183×丹340.黄早四×丹340和丹340×G29等几个杂交玉米新组合作生产示范,以鉴定其丰产性、适应性、抗逆性,为我区示范推广优良组合提供可靠的科学依据。现将生产示范的调查结果初报于
The use of maize hybrid advantage is to improve yield per unit area of corn is an important measure. In recent years, the promotion of hybrid corn varieties in our region has played a pivotal role in increasing corn production. However, due to the long service life of existing varieties, some mixed degeneration, affecting the further improvement of yield.In order to speed up the promotion of hybrid corn and combination of replacement updates, in 1985 we introduced from Liaoning Dandong City Agricultural Institute MO17Ht × Dan 340, restore 183 × Dan 340. Huangzao four × Dan 340 and Dan 340 × G29 and other new combinations of hybrid corn as a demonstration of production in order to identify its high yield, adaptability, resistance, for our region to promote good combination of demonstration Provide a reliable scientific basis. Production demonstration is now the first report of the findings in