一.为什么要实行小麦密植在一定的耕地面积上播种一定数量的种子,使每个植株都有足够的营养面积,充分利用地力和日光能,是获得单位面积上高额产量的重要农业技术措施之一。“密植”二字具有相对的意义,所谓合理密植,实际上是在一定的自然条件和农业技术水平下的播种方法和播种量的问题,决不能误解为愈密愈好。目前苏联播种小麦的行距多为15厘米(4.5寸),每公顷的播种量由400万粒到530万粒不等(合我国每亩26万7千粒到35万4千粒),很多先进工作者在创造高额丰产中,每公顷播种量有达到700万粒或700万粒以上者.近年来又采用了窄行条播行距缩小到7.5厘米(2.25 I. Why Planting a Certain Amount of Seeds on High Density Wheat Cultivars, Allowing Each Plant to Have Adequate Nutritional Area and Making Full Use of Soil Effluents and Solar Energy, It is an Important Agricultural Technique to Achieve High Output per Unit Area one. The meaning of “dense planting” has relative meanings. The so-called rational and close planting is actually a question of sowing methods and sowing quantity under certain natural conditions and technical levels of agriculture. It must not be misunderstood as getting better and better. At present, the space for sowing wheat in the Soviet Union is mostly 15 cm (4.5 inches). The sown area per hectare ranges from 4 million to 5.3 million (a total of 267,000 to 354,000 per mu in China) and many advanced In creating high yield, workers have reached 7 million or more seeding per hectare. In recent years, they have also adopted a narrow strip spacing of 7.5 cm (2.25