论文部分内容阅读
为了明确影响黑龙江省水稻生产的因素与各因素之间的相互影响,笔者剖析了几十年来黑龙江省水稻主栽品种的生产力、特征特性与产量构成因素,以及品种的耐肥性。黑龙江省水稻生产基本分为4个增长阶段,各阶段主栽品种分别为‘合江19号’、‘合江23号’、‘空育131’与‘龙粳31’。分析发现,这4个代表不同时期的主栽品种的产量构成四因素中,每穗粒数、结实率与千粒重变化不大,每穗粒数的增加是持续再创高产的关键因素。同时品种的抗病性与抗倒伏性以及吸肥能力依次增强。通过分析阐明在育种方面应致力于增加每穗粒数,在栽培方面应增施有机肥料,提高氮肥利用率。
In order to clarify the interaction between factors and rice production in Heilongjiang Province, the author analyzed the productivity, characteristics, yield components and rice varieties of Heilongjiang Province in decades. Rice production in Heilongjiang Province is basically divided into four growth stages. The major cultivars in each stage are Hejiang 19, Hejiang 23, Kongyu 131 and Longjing 31. The results showed that among the four factors, the grains per spike, seed setting rate and 1000-grain weight did not change significantly. The increase of grain number per spike was the key factor to continue to reproduce high yield. At the same time, the varieties’ disease resistance, lodging resistance and the ability of absorbing fat increased in turn. Through the analysis shows that in breeding should be committed to increasing the number of grains per spike, in the cultivation of organic fertilizer should be increased, improve nitrogen utilization.