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杂交稻空秕粒多,在空秕粒总数中,空壳粒所占比例大,是什么原因导致杂交稻形成空壳而不能灌浆结实呢。固然外界因素是光、温、肥、水、气等条件的不适宜,但外因通过内因起作用,有机营养状况是影响杂交稻空壳粒的真正原因(周嘉槐等,1979:“杂交稻的空壳率和营养状况的关系”,《植物生理学报》第5卷第3期)。本文报道1979年进行的去叶或去粒试验,通过调整源(叶)、库(粒)关系,研究有机营养的供应量(亦即叶片同化产物的供应量)对杂交稻结实性状的影响。试验在当涂县农科所试验大田进行,供试品种为“两系”杂交稻3—58×广泾,用作双季早稻于5月6日单本栽插,株行距3×5寸,每小区120穴,抽穗期
In hybrid rice, there are many empty rice grains. In the total number of empty rice grains, the proportion of empty shell grains is large. What causes the hybrid rice to form a hollow shell and can not be grouted and sturdy? Although external factors are not suitable for light, temperature, fertilizer, water, gas and other conditions, but external factors through the internal factors, organic nutrition is the real reason for affecting hybrid rice empty shell (Zhou Jiahuai et al., 1979: Shell rate and nutritional status of the relationship between “,” Plant Physiology “Volume 5 No. 3). In this paper, we report the leaf removal or grain-removing experiment carried out in 1979 and study the effect of organic nutrient supply (ie the supply of leaf assimilation products) on the trait of hybrid rice by adjusting the relationship between source (leaf) and sink (grain). The experiment was carried out in the fields tested in Dangtu County Agronomy. The tested varieties were ”two lines" hybrid rice 3-58 × Guangjing, which was used as double crop early rice on May 6 for single planting with spacing of 3 × 5 inches , 120 points per plot, heading date