雨养状态下‘晋小豆2号’生物产量积累分析研究

为了探索红小豆在雨养件下的生物产量积累的特性,为红小豆科学经济种植,科学有效的利用自然降雨提供参考依据,于2012年开展以‘晋小豆2号’红小豆在雨养条件下的生长发育研究试验.‘晋小豆2号’出苗后20天开始大田取样、采集数据.通过采集‘晋小豆2号’根、茎、叶花、果实等农艺性状的生物产量动态数据的方法来研究‘晋小豆2号’在雨养条件下全生育期内的生物产量变化规律.结果表明,‘晋小豆2号’株高发育和生长天数呈现线性关系,线形相关方程式为=12.097x-4.863,两者的拟合度达到0.8371;对生真叶在出苗后30天内叶面积的生物产量都持续增长,30天后呈下降趋势,50天后消失;三出复叶的生物量积累呈现抛物线形.干鲜重生物积累分别符合=-2.5229x2＋48.458x-87.103和y=-0.3822x2＋7.8570x-14.878函数分布;茎生长和三出复叶生长同步,茎的生物持水量低于三出复叶;‘晋小豆2号’根的生长表现为先快,后缓,8月以后根的生长呈现比较平缓的锯齿状变化,土壤和外界改良对根的发育作用较大;主茎分枝和品种特性有关,是相对基本稳定的一个性状;节在雨量充沛的条件下,有增多的现象,但是生物产量的增加主要因节间距的伸长为主,控制株型可在出苗后50天左右进行.花脱落严重,成为有效结荚花在立秋前后.鼓粒、灌浆时间大约持续40天左右.鉴于此,‘晋小豆2号’可适当选择晚播;雨量充沛年份注意防止植株徒长;开花前期注重保花保蕾,以确保丰产丰收.

Study on the Biological Yield of ‘Jinxiaodou 2＇ in Rainfed Condition

In order to explore the characteristics of biological yield of adzuki beans under rainfed conditions of accumulation and to provide the reference for the economic cropping adzuki beans, the study was carried out adzuki beans in rain fed on growth conditions by ＇Jinxiaodou 2＇ in 2012. Field sampling was began to collected data after seedling emergence in the 20 days, once a week. Then, studied the rules of ＇Jinxiaodou 2＇ under rained conditions in the whole period of biomass variation by the data. The results showed that： ＇ Jinxiaodou 2＇ height growth and growth days showed a linear relationship, the correlation equation was： y=12.097x-4.863, degree of fitting was 0.8371; after seeding emergence, the opposite really leaves continued growth of in 30 days, then declined to died away in 50 days. Biomass accumulation of ternately compound leaf showed parabola, dry and fresh weight of biological accumulation in accordance with y=-2.5229x2 ＋ 48.458x-87.103 and y=-0.3822x2 ＋ 7.8570x-14.878 function distribution. The growth of stems was same as ternately compound leaves and biological water holding capacity was lower than leave. Growth performance of roots was first quick, then slow, after August, the roots showed serrated change smoothly, the soil and conditions improved development effect on the root of the larger. The stems related with variety and was a relatively stable traits. The joint showed growing phenomenon when rain was plenty, but the biomass increase was mainly due to distance between joints~ Controlling plant type and can be carried out in 50 days after emergence around. Blossoms fell off badly, blossoms appeared and become effective pod spent were the beginning of autumn, the filling time lasted about 40 days. For that reason： ＇Jinxiaodou 2＇ can choose the suitable late sowing; rainfall year pay attention to prevent the plant growth, the early focus on protecting blossom bud keeping, to ensure a good harvest.