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我校地处长安西部农村.在生物教学中,为了使教学与实践相结合,我把学生中的生物爱好者组成生物兴趣小组,利用我校有利条件及课余时间,在校内农场开展了以小麦育种为主的课外科技活动.多年来,经过辛勤的实践,现在已选育了一些小麦良种,在当地进行了推广应用,有力地支援了农村社队.其中选育的75(7)—3—1是一个特别突出的良种,群众普遍反映良好.75(7)国—3—1是我校1975年用武功(671)2—4作母本,卜化4号作父本进行杂交,经过五年时间选育而成的.现将选育的全过程介绍如下: 制定正确的育种目标为了使同学学到制定育种目标的知识,我除了讲解这方面的理论知识外,又和同学们共同讨论怎样结合地区特点确定育种目标.我们分析了当地的水土条件,认为:西安地区灌溉条件优越,土地平坦,土壤肥沃,一年两熟,是粮食作物的高产区.但是,由于小麦高产品种的特性与这里的自然条件不相适应,小麦产量受到一定的影响.因为一般高产的小麦品种,成熟期都较晚,再加之肥力充足,小麦成熟更加推迟,这样后期青干,赤霉等病害发生,对小麦产量影响很大.另外,由于小麦晚熟,又推迟了玉
Our school is located in the western rural Chang’an.In biology teaching, in order to make the combination of teaching and practice, I put the students in the bio-hobby group composed of lovers, the use of our school favorable conditions and after-school time, carried out in the school farm to wheat After years of hard work, some wheat varieties have been bred and popularized and popularized locally, which has strongly supported the rural community teams. Among them, the breeding of 75 (7) -3 -1 is a particularly prominent species, the masses generally reflect the good .75 (7) States -3-1 is my school in 1975 with the martial arts (671) 2-4 as the mother, BU Hua 4 as the male parent, After five years of breeding and now breeding the whole process is as follows: Develop the correct breeding objectives In order to make students learn to develop breeding goals, in addition to explain this theoretical knowledge, but also with the students Discussing how to combine the regional characteristics to determine the breeding target.We analyzed the local soil and water conditions, that: Xi’an irrigation superior conditions, the land is flat, fertile soil, two crops a year, is a high-yielding areas of food crops.However, due to high-yield wheat varieties Features Incompatible with the natural conditions here, the yield of wheat is affected to some extent.Because the general high yield of wheat varieties, the late maturity, coupled with adequate fertility, wheat more delayed, so that the late dry, blight and other diseases, Great impact on wheat yield.In addition, due to late maturing wheat, but also delayed the jade