Application of a Compound Substrate to Mushroom Residue in Towel Gourd Seedling Raising
To explore the feasibility of using Pleurotus giganteus mushroom residue as a substrate for loofah seedling breed-ing and to analyze the effect of different P.giganteus mushroom residue compound substrates on the growth of loofah seed-lings to provide a reference for P.giganteus mushroom residue application for loofah seedling breeding in the future and to solve this problem.The problem of environmental pollution is caused by P.giganteus mushroom residues.Using Nongfu loo-fah 805 as the test material,five kinds of substrates,namely P.giganteus mushroom residue,perlite,peat,vermiculite,and coconut bran,were formulated into soilless culture substrates according to different ratios,and the physicochemical properties of seven different substrate formulations and their effects on Towel gourd growth and photosynthetic pigments were evaluated.The results showed that(1)except for the growth index of the large mushroom residue formula treatment group,which was lower than that of the CK1 treatment group,the growth indices of the other treatment groups were greater than those of the control group indicating that it was completely feasible to apply the large mushroom residue to the cultivation of luffa plants.However,it was not suitable to use the whole large mushroom residue substrate for cultivation.(2)In terms of water-holding porosity,formula CK2 has a low porosity,which is slightly lower than the ideal matrix requirements;in the EC value,formulas CK2,T4,and T5 are high and do not meet the requirements of the ideal matrix;in terms of pH formulas CK2 and T5 are low,and formulasT1 and T2 are high,which do not meet the requirements of the ideal matrix.Only formulas CK1 and T3 met the requirements of the ideal matrix.(3)Formula T3 promoted the increase in plant height,stem diameter,and hypocotyl length,and it increased the fresh weight,dry weight,and dry weight of the aboveground and underground parts,and the seedling in-dex was greatest,which had the greatest effect on the growth and development of luffa.The chlorophyll a and total chlorophyll contents were the highest in the T1 and T3 treatments at 7 and 14 days,respectively.Formula T2 is beneficial for increasing chlorophyll b content;for carotenoid content,formulas CK1 and T3 had the highest carotenoid content at 7 and 14 days,re-spectively.(4)After screening,the formula P.giganteus from mushroom residue:perlite:vermiculite=3:1:1 was the best compound matrix formula for loofah seedling breeding;the optimal use ratio of P.giganteus from mushroom residue was 60%.
万方数据
维普
