不同基质配方对番木瓜种子发芽及幼苗生长的影响

为了筛选出最佳番木瓜育苗基质,以杂交种番木瓜“红妃”种子为试材,比较不同基质(品氏育苗基质、蛭石、泥炭土、草木灰、园土)配方对番木瓜种子发芽及幼苗生长的影响.试验结果表明:与对照组(园土)相比,各配方组的番木瓜种子发芽时间均显著减少,可减少6.67%~40.00%,发芽率和出苗率显著增加,分别增加2.88%~20.88%和2.43%~19.09%;不同配方的番木瓜幼苗生长势均高于对照组,茎粗、株高和根系较对照组显著增加.综合考虑发芽和幼苗生长,配方1(80%品氏基质+20%蛭石)和配方6(40%品氏基质+20%草木灰+20%泥炭土+20%蛭石)是较适宜的番木瓜育苗基质配方,处理后的番木瓜种子发芽率高,根系生长好,幼苗健壮.

Effects of Different Substrate Formula on Seed Germination and Seedling Growth of Papaya

In order to screen the best substrate for papaya seedling, seeds of papaya cv. “Hongfei” were used as materials to compare the effects of different substrates(Pindstrup sphagnum, vermiculite, peat soil, plant ash and garden soil)on seed germination and seedling growth of papaya. The results showed that the germination time of papaya seeds in each formula was significantly shorter than that in the control group(garden soil)by 6.67%-40.00%. The germination and seedling rate were higher than that in the control group by 2.88%-20.88 and 2.43%-19.09%, respectively. The seedling growth potential in different formulas was higher than that in the control group, and the stem diameter, plant height and root number were significantly increased. Comprehensively considering germination and seedling growth, the formula 1(80% Pindstrup sphagnum+20% vermiculite)and formula 6(40% Pindstrup sphagnum+20% plant ash+20% peat soil+20% vermiculite)were the suitable substrate formulas for the papaya seedling cultivation. Planted in formula 1 and 6, the seeds germination rate of papaya was the highest, the root growth was healthy and the seedling was strong.