Pay close attention to make spring mulberry management
With the rise of temperature, the longest mulberry tree shoot has 25 centimeters in length and 8 to 9 leaf openings, which is about 3 days earlier than the same period of last year. It is estimated that the time for spring silkworms to be planted this year should be 1 to 2 days earlier. In order to ensure a good harvest of spring leaves and to ensure the balance between mulberry leaves and silkworm eggs, let the silkworm farmer's friends take advantage of the following tasks:
1. Spring plowing, weeding: Spring cultivation should be carried out before the mulberry sprouts, depth of 10 to 13 cm, and the soil blocks should be broken and broken; weeding can use chemical herbicides in combination with cultivator for soil treatment or direct spraying on weed stems and leaves, weeding The agent can be used in a concentration of 2% aqueous solution of phosphoside.
2. Applying spring fertilizer: The amount of spring fertilizer is large. In order to reduce the loss of fertilizer, it is generally divided into two parts. For the first time, 35 to 40 kg of special compound fertilizer is applied per mu, or ammonium bicarbonate is 50 kg+ superphosphate 25 Kg + potassium chloride 10 kilograms, or urea 35-40 kilograms; the second to mid-April application of 25 acres of sericultural compound fertilizer, or urea 15 to 20 kilograms.
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