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小麦的产量是由每亩穗数、每穗粒数和粒重构成的.高产小麦在穗足、穗大粒多的基础上,粒重的高低对产量有重大影响.在前人研究的基础上,作者于1974—1975年,观察了不同品种、不同肥水措施、不同穗位上籽粒的灌浆过程,结果如下.一、材料和方法本试验在山东农学院实习农场进行.试验地为多年菜茬,土壤有机质1%,全氮0.09%,速效磷30ppm以上.选用泰山4号、高三八和蚰包三个品种;并在蚰包试验田中,选用了肥3(起身期追硫铵40斤/亩)、肥5(孕穗期追硫铵40斤/亩)和肥6(未追肥,与肥3同时灌水)三种肥料水平,以便分析土壤供肥水平不同或植株营养状况
The yield of wheat is composed of the number of spikes per panicle, the number of grains per spike and grain weight.When the grain yield is large, the grain yield of high-yielding wheat has a significant impact on the basis of spike footprinting and large grain spike.On the basis of previous studies , The author in 1974-1975 observed the different varieties, different fertilizer measures, grain filling process at different ear positions, the results are as follows.Materials and methodsThis experiment was carried out in Shandong Agricultural College internship farm.Experiments for the years of stubble , Soil organic matter 1%, total nitrogen 0.09%, available phosphorus more than 30ppm .Taishan 4, 38, and Baotou three varieties; and Baotou experimental field, the choice of fertilizer 3 / Mu), fertilizer 5 (booting 40 kg bismuth / booting stage), and fertilizer 6 (irrigating, fertilizing at the same time), in order to analyze the different levels of soil fertility or vegetative status