The invention relates to a mould-inhibition and yield-increasing panacea dedicated to the soil covering process for phlebopus portentosus, and provides a composite
nutrient solution, particularly the formula, the proportion and the application method of the mould-inhibition and yield-increasing panacea. The formula and the proportion of the mould-inhibition and yield-increasing panacea, dedicated to the soil covering process for phlebopus portentosus, are as follows: 100-200g / L of potatoes (peeled and boiled into juice), 1-2g / L of
magnesium sulfate, 1-2g / L of
monopotassium phosphate, 0.2-0.4 g / L of
ferrous sulfate, 10-20 mg / L of
vitamin B1, 2-4g / L of
yeast extract, 10-20g / L of white
sugar, and 1L of water. The application method of the mould-inhibition and yield-increasing panacea comprises the steps of respectively and accurately weighing the above components by means of an electronic balance, measuring water in a
measuring cup, boiling potatoes in an induction
cooker to be muddy and then filtering the muddy potatoes into potato juice, respectively adding the above parts into the potato juice, uniformly stirring the potato juice and
sizing the potato juice to be 1L, cooling the potato juice and uniformly spraying the potato juice onto a soil-covering material by a sprinkling can. In this way, the
water content of the soil-covering material is 45-50%, and the pH value of the soil-covering material is 5.0-6.5. The invention is low in cost, and simple and convenient in operation. The mould-inhibition performance of the phlebopus portentosus after the soil covering process is significantly improved, and the
hyphal growth of the soil covering layer is significantly promoted. Therefore,
boletus is uniform in fruiting and consistent in maturity. The generation of deformed mushrooms is obviously reduced, and the quality of
boletus is improved. The yield of
boletus is obviously improved.