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前言水稻的分蘗習性是影响產量的主要因素,而分蘗力的强弱、有效分蘗百分此的大小以及不同位次分蘗的穗重,又因品种、栽培密度、地力肥瘠……等等,外界环境的不同而变化,因此研究不同品种和各种栽植密度对分蘗的影响及其与產量的关系,不論在理论上或生產实踐上,都有重大的意义。关于水稻直播和在單本植情况下分蘗發生的規律,苏联Π.С.耶雷金(2)以及日本片山佃和木户三夫等[1,820,22)曾進行过系統而深入的研究,我國楊开渠教授对不同品种的分蘗習性也作过系統的試驗(6,7),但是,如何把水稻分蘗規律应用于生產实踐中,亦即結合不同栽植密度來研究水稻分蘗發生的規律,則是今后值得進一步深入探討的問題。
Introduction The tillering habits of rice is the main factor affecting the yield, and the strength of tillering force, the percentage of effective tillers and the tillering weight of tillers with different positions, because of variety, planting density, fertility and fertility ...... And so on, Therefore, it is of great significance to study the effects of different varieties and planting densities on tillering and its relationship with yield, both in theory and in production practice. With regard to the pattern of direct seeding of rice and tillering in the case of monoculture, the Soviet Union Π.С. Jerekin (2) and Japan’s Katayama and Mito Sanbu [1,820,22] conducted systematic and in-depth studies. Our country Professor Yang Kaiqu also systematically tested the tillering habits of different varieties (6, 7). However, how to apply the tillering rule of rice to the practice of production, that is, to study the law of tillering in rice with different planting densities Future deserves further discussion.