初花期喷施多效唑对圆叶决明植株性状及光合效率的影响研究

试验研究表明圆叶决明经不同浓度多效唑 (MET或PP3 3 3 )处理后其茎、叶和果荚外观发生变化 ,植株营养生长受抑 ,而适宜多效唑浓度有利于提高其有效分枝数和有效结荚数。叶片叶绿素含量随浓度的变化规律为“CPI86 134”对照 <5 0mg/kg浓度处理 <2 0 0mg/kg浓度处理 <10 0mg/kg浓度处理 ,而“CPI92 985”对照 <10 0mg/kg浓度处理 <4 0 0mg/kg浓度处理 <2 0 0mg/kg浓度处理 ,光合速率与叶片叶绿素含量相一致。掌握最佳喷施时间和浓度是提高圆叶决明种子产量及品质、缩短收种时间和降低收种成本的关键。

Effect of multi-effects triazole(MET)on plant characters and photosynthetic efficiency of leguminous forage in initial flowering stage

The different morphologies of the stems, leaves and legumes and the prohibition of the nutritional growth of Chamacrista SPP. occur with different consistences of MET, but proper consistence of MET can increase the branches and legumes. The changes of the content of chlorophyll of Chamacrista SPP.'s leaves are CPI86134 treatment <50mg/kg consistence treatment<200mg/kg consistence treatment <100mg/kg consistence treatment, CPI92985 treatment <100mg/kg consistence treatment <400mg/kg consistence treatment <200mg/kg consistence treatment. The change of photosynthetic rate is the same as that in the content of chloroplyll. Spraying MET at proper time and consistence can increase the quality and quantity and decrease the growing period and production cost of Chamacrista SPP.'s seeds.