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在小麦高产栽培中,对现有品种的群体动态已基本上摸到了适宜的范围,而在此基础上如何提高穗重是需要进一步探讨的问题。本试验是用既深耘又培土的措施,先控后促抑制过大群体,增强根系活力,协调植株内部碳氮营养,提高灌浆速度,达到增粒增重的目的。我们于1980—1981年进行了两年田间试验,现将其结果简报如下:
In the high-yielding cultivation of wheat, the population dynamics of the existing cultivars have basically reached a suitable range, and on this basis, how to improve the panicle weight is a problem that needs further exploration. This experiment is to use both deep and soil cultivation measures, after the first control and suppression of excessive population, enhance root activity, coordination of plant internal carbon and nitrogen nutrition, improve filling speed, to achieve the purpose of grain weight gain. We conducted a two-year field trial in 1980-1981 and now we have a brief summary of the results: