论文部分内容阅读
为探明单粒精播对夏直播花生的个体发育和群体结构以及产量的影响,以‘花育22号’花生为试验材料,研究了麦茬夏直播花生单粒精播(SS)和双粒穴播(DS)在相同密度条件下的植株发育动态、叶片生理特性和产量及其构成因素的差异。结果表明:夏直播花生单粒精播在生育前期的主茎高和侧枝长均高于双粒穴播,而在生育后期则低于双粒穴播,但差异不显著。单粒精播在各个生育期的主茎节数、主茎绿叶数、分枝数和叶面积指数均高于双粒穴播,尤其是分枝数差异显著。夏直播花生单粒精播在饱果期和成熟期的叶片SOD、POD、CAT活性和叶绿素含量以及净光合速率均高于双粒穴播,而其MDA含量低于双粒穴播,其中在成熟期除了CAT活性差异不显著外,其余指标均显著差异。夏直播花生单粒精播的单株饱果数增多,单株果重增加,荚果产量显著高于双粒穴播。夏直播花生荚果产量与单株果重和叶片净光合速率极显著正相关,与经济系数、主茎绿叶数、叶面积指数和叶绿素含量呈显著正相关。
In order to explore the effects of single grain sowing on the individual development, population structure and yield of direct sowing peanut in summer, peanut (Huayu 22) was used as experimental material to study the effects of single sowing sowing (SS) Plant growth dynamics, leaf physiological characteristics and yield, and their compositional factors under the same densities of planting (DS). The results showed that the main stem height and collateral length of perennial sowing sowing perennials were higher than that of sowing seeding in early growing stage, but lower than that of sowing seeding in late sowing stage, but the difference was not significant. The number of main stems, the number of green leaves, the number of branches and the leaf area index of sowing seeding in all growth stages were all higher than that of sowing, especially the number of branches was significantly different. The activities of SOD, POD and CAT, the content of chlorophyll and the net photosynthetic rate of perennial sowing sowing peaches were higher than those of sowing sowing at full and mature stages, while their MDA contents were lower than that of sowing sowing, In addition to the difference in CAT activity was not significant, the other indicators were significantly different. Summer perennial sowing sowing the number of peaches per plant increased the number of fruit weight per plant increased pod yield was significantly higher than the sowing of two-particle. The perennial direct sowing peanut pod yield was significantly and positively correlated with the fruit weight per plant and the net photosynthetic rate of leaves, and positively correlated with the economic coefficient, the number of green leaves, leaf area index and chlorophyll content.