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长江中下游地区小麦穗器官分化形成期长,有利于小穗小花发育,具有花多、实多、穗大粒多的生态优势;但春季多雨寡照。分蘗成穗率低,限制了穗数的利用潜力;并因为小麦籽粒发育过程中自然灾害频繁。千粒重难以稳定和提高。据我院多年研究,实现本区小麦高产的途径是运用阶段控制手段,首攻足穗,在足穗的基础上争取大穗,提高和稳定粒重。如扬麦系统品种(下同)应争取每亩有效穗26—30万,每穗35—40粒,千粒重40克左右。小麦苗期以营养生长为主,地下部根系增生,地
In the middle and lower reaches of the Yangtze River, spikelets of wheat organs formed during the long period of development, which was conducive to the development of spikelets and small flowers, and had the ecological advantages of more flowers, more stems, and larger spikelets; The low ear tillering rate limits the utilization potential of spike numbers and because of frequent natural disasters during wheat grain development. One thousand grain weight is difficult to stabilize and improve. According to our hospital for many years to study, to achieve high yield wheat in this area is the use of stage control means, the first attack enough to spike in the foot on the basis of large spike, increase and stabilize the grain weight. Such as Yang wheat varieties (the same below) should strive for 26-30 million effective acres per acre, 35-40 grains per spike, grain weight 40 grams. Wheat seedling to vegetative growth, underground root hyperplasia, and