处理温度对橡胶园覆盖绿肥种子萌发的影响

Effects of different initial temperatures on the seed germination of mulch green manure in rubber plantation

为明确不同绿肥种子萌发的最佳处理温度,以常温水为对照,采用初始温度为60、65、70、75、80、85、90℃的热水对在橡胶园具有良好适生性的12种覆盖绿肥种子进行处理,以研究不同处理温度对橡胶园覆盖绿肥种子萌发的影响。结果表明:柱花草种经常温水处理后的发芽势和发芽率均最高,升高处理水温均能明显提高其余11种绿肥种子的发芽势和发芽率。毛蔓豆、圆叶决明种子的最佳发芽处理温度为85℃,大叶千斤拔种子为80℃,刺毛黧豆种子为75℃,爪哇葛藤、钝叶决明种子为70℃,铺地木蓝种子为65℃,印尼乌绿豆、十一叶木蓝、长果猪屎豆、决明种子为60℃。

This experiment was conducted to determine the optimum temperature for seed germination of green manure. In room temperature, 12 kinds of leguminous green manure seeds were treated by hot water with the initial temperature of 60, 65, 70, 75, 80, 85, 90℃ , respectively. And the water under room temperature was designed as control （CK）. The results showed that seed germination energy and rates of Stylosanthes guianensis was the highest in room temperature. But the other 11 kinds of green manure seed germination enegy and germination rates were significantly improved as the temperatures of hot water rose. The optimum germination temperatures to treat different green manure were as follows： 85℃ for Calopogonium mucunoides and Chanu^crista rotundifolia, 80℃ for Flemingia macrophylia, 75℃ for Mucuna pruriens , 70℃ for Pueraria phaseoloides and Cassia obtasifolia, 65℃ for Indigofera endecaphyUa, 60℃ for Phaseolus spp, Indigofera spicata, Crotalaria lanceolata and Senna obtusifolia. Key words： rubber plantation; mulch green manure; treated temperature; seed germination