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一、前言我省中、北部平原灌区,小麦产量较高。近年来,因尚无更高产的品种,栽培技术也无大的变革,致使小麦单产徘徊在七、八百斤左右。有些麦田单产虽达九百斤以上,个别地块甚至突破千斤,但年际变幅大,重演性较差。所以,怎样改进栽培措施,促使稳产高产,仍是小麦高产栽培研究的重要课题。根据小麦器官形成与栽培条件的关系,以及对高产限制因素和现行技术利弊的分析可以推断,欲获高产稳产,宜在低群体、壮个体的途径中,尽可能地挖掘单株增产潜
I. Introduction In the middle and northern part of our province, there is a high yield of wheat in plain irrigation areas. In recent years, there has been no major change in cultivation techniques due to the fact that no more high-yielding cultivars have yet led to a hike in wheat yields of about seven or eighty catties. Although the yield of some wheat fields has reached more than nine hundred kilograms, some even exceeded the mass of plots, but the annual amplitude is large and the replayability is poor. Therefore, how to improve the cultivation measures to promote stable and high yields is still an important issue for the research of high-yielding wheat. According to the relationship between wheat organogenesis and cultivation conditions, as well as the analysis of the limiting factors of high yield and the advantages and disadvantages of the current technology, it can be concluded that in order to obtain high and stable yield, it is advisable to excavate the potential yield increase of single plant in the way of low population and strong individual