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1958年大跃进以来,我所抽出較多的研究力量,总結了小麦丰产經驗,經过大面积的調查研究,得到以下几項结果。在密植問題上,通过不同土壤上重复15次的密、肥双因子試驗,我們发現:每亩施用土粪3万斤、播种量20斤的产量最高;施肥3—8万斤的水平下,播种量超出20斤,产量有減低的趋势;随播种量的增加,单位面积穗数有达一极限的趋势;植株羣体的大小与植株个体的发育在一定限度內有函数的关系,单位面积上株数最大,而又不影响个体发育时則产量最高,因此产量又主要受肥料与播种量两个因子的影响。通过大面积上的十几块对比地的調查与实驗室分析,对于小麦倒伏問題得出以下概念。关于倒伏对小麦产量的影响问题,以往在国內的研究中有认为减产与不減产的两种看法,我們的工作結果指出,倒伏对小麦产量是否降低,要以倒伏时期为准,认为絕对減
Since the Great Leap Forward in 1958, I have extracted more research power and summed up the experience of wheat yield. After a large area of investigation and study, I got the following results. On the dense planting problem, we found that the yield per mu was 30,000 kg and the sowing rate was 20 kg. The fertilization level was 3-8 kg , Sowing more than 20 pounds, the yield has reduced the trend; with the increase of sowing, panicle number per unit area reached a limit trend; plant population size and plant development within a certain limit within a functional relationship, the unit The area of the largest number of plants, without affecting the development of individuals when the highest yield, so the yield is mainly affected by fertilizer and sowing two factors. Through a dozen large-scale comparative surveys and laboratory analyzes, we came to the following concepts of wheat lodging. As for the impact of lodging on wheat yield, in the past, there were two views in domestic research that reduce or not reduce production. Our work indicates that whether the lodging of wheat yields is reduced should be based on the lodging period, Reduced