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研究了在高产条件下，不同行距配置、密度对奶花芸豆群体田间小气候变化、冠层结构、光能分布与利用特性及产量构成的影响。结果表明在适宜的群体密度下，通过扩大行距，减小株距，有利于优化群体结构，显著影响小气候因子在群体中的分布，改善个体生育状况和群体通风透光条件，使产量构成因素实现最佳配置，充分利用地力和空间，从而获得最佳产量。在实验条件下，密度15000株/hm2，行距60cm或采用80+40cm宽窄行、株距10~15cm是奶花芸豆理论上的田间最佳分布的配置。 相似文献
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Vinícius Toso Jerônimo Luiz Andriolo Maíne Alessandra Lerner Odair José Schmitt Francieli Lima Cardoso 《Journal of plant nutrition》2017,40(14):2006-2013
The aim of this research was to determine the effect of nitrogen (N) availability on wild Rhizobiumnodulation, plant growth and grain yield of the common bean crop. Experiments were conducted in two growing periods, from 2 March to 3 June 2011 (autumn) and from 21 September to 23 December 2011 (spring), in pots using sand as substrate. Nitrogen concentrations of 5.12 (T1), 7.6 (T2), 10.12 (T3), 12.62 (T4), and 15.12 (T5) mmol L?1 were supplied by fertigation. In spring, the grain yield, number of grains and shoot growth of both cultivars reduced by effect of N concentration but in the cultivar BRS Valente they reducedonly in autumn. Number of nodules and root growth decreased in both cultivars while N concentration increased in the plant tissues. Nitrogen fertilization is not required to the common bean and its use inhibits nodulation. The increased availability does not enhance plant growth and grain yield. 相似文献
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F. H. M. G. Savelkoul S. Tamminga P. P. A. M. Leenaars J. Schering D. W. Ter Maat 《Plant foods for human nutrition (Dordrecht, Netherlands)》1994,45(3):213-222
White kidney beans (Phaseolus vulgaris), cv Processor, contain a relatively high content of phaseolin (storage protein), lectins and a special group of glycoproteins as well as a considerable amount of protein-type trypsin inhibitors. Protein digestion of raw Processor beans in monogastrics, for example pigs, is disturbed by poorly digested, phaseolin lectins, which can bind to carbohydrates in brush border membranes of the small intestinal epithelium, and trypsin inhibitors. The effect of the germination of white kidney beans on lectins, phaseolin and trypsin inhibitors was studied in order to achieve a degradation of lectins, phaseolin and trypsin inhibitors and an increase ofin vitro enzymatic hydrolysis of the protein of bean flour. Therefore, whole bean extracts were examined throughout a germination period of up to seven days for their lectin and phaseolin pattern, lectin content, binding capacities of functional lectins towards brush border membranes and trypsin inhibitor content. In addition thein vitro enzymatic hydrolysis by pepsin and pancreatin of the protein from flours of (un)germinated white kidney beans was studied. SDS-PAGE demonstrated a degradation of E-lectins and a disappearance of L-lectins and phaseolin during germination. Results indicated a decrease of the lectin content by 85%, a loss of binding capacities of functional lectins towards brush border membranes by 91%, and a decrease of trypsin inhibitors by 76%, in bean flour after germination for seven days. A maximum inin vitro enzymatic hydrolysis of protein from bean flour was already established after germination for half a day. 相似文献
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奶花芸豆群体冠层结构特征及产量性状研究 总被引：1，自引：0，他引：1
研究了在高产条件下,不同行距配置、密度对奶花芸豆群体冠层结构、光能分布与利用特性及产量构成的影响。结果表明在适宜的群体密度下,通过扩大行距,减小株距,有利于优化群体结构。冠层结构各指标的变化表现为:随密度增加,平均叶簇倾角变大,群体直射辐射透过系数降低,消光系数增大,株型变紧凑。但密度过大,群体直射辐射透过系数过小,冠层结构不良,造成生育后期群体叶面积较快下降。随着行距加大,叶片横向生长速度加快,叶倾角变大,群体直射辐射透过系数增加,消光系数下降。合理的密度与株行距配置可改善个体生育状况和群体通风透光条件,使产量构成因素实现最佳配置,充分利用地力和空间,从而获得最佳产量。 相似文献