Predicting the output of mulberry leaves in the spring of the year is generally around March 15th. The method is to classify mulberry trees according to the growth of mulberry trees, and select 10-20 mulberry trees representative of various types of mulberry fields to investigate the total number of mulberry trees. Count the slivers, and calculate the average length of each plant. Then calculate the total length according to the number of plants per 0.067 hectares, and multiply the total number of leaves by the estimated unit length (usually the amount of long-growing leaf of the lake mulberry is 0.1 kg or so). Yields 0.067 hectares of leaf production.
In the rearing of spring silkworms, the amount of spring silkworm rearing can be determined based on the predicted spring leaf yield, combined with other factors, and the ratio of silkworm rearing (usually 100:20:120 for spring, summer and autumn silkworms), Determine the amount of summer and autumn silkworm rearing.
Second, the various seasons of silkworm rearing. Spring silkworm breeding units or farmers can be raised in two batches. The first batch must ensure that there is no shortage of leaves on the clusters, and leave a margin; the second batch can be determined based on the extent of mulberry leaf production increase. The first batch of breeding amount is 90% of the total amount of hair, and the second batch of 10% is appropriate. Before and after the two batches of receiving ants need to be separated by 7-8 days in order to facilitate the adjustment of mulberry leaves, make full use of silkworm room, silkworms and labor.
The main feed for summer silkworms is 4-5 shoots of mulberry buds and new strips. The temperature during the summer silkworm period is still suitable, and the silkworms, silkworms, and labor are relatively plentiful. The mulberry leaves are tender and the silkworm is better maintained. However, mulberry trees have entered a long period of time and the amount of leaf collected should not be too large. The average summer silkworm feed is 20% of the silkworm.
Autumn silkworm should be based on the characteristics of the continuous extension of the mulberry in the autumn, the continuous growth, maturation and hardening of the leaves, and reasonable arrangement and feeding in phases. Early autumn silkworms can be used for saplings in the lower part of the mulberry branches, and the amount of leaf collected is no more than 1/2 of the number of branches of the leaves at that time, and the amount of the silkworms taken accounts for 20%-30% of the silkworms. During the Mid-Autumn period, effective saplings of mulberry trees have basically taken shape. It is during the period when mulberry leaves are lush. We must make full use of mulberry leaves to raise the mid-Autumn Silkworm. However, after the leaves are picked, 2-8 leaves must be left in the tip of the mulberry tree, and the amount of mid-autumn silkworm should be 80%-85% of the silkworm. The amount of rearing silkworms should be determined according to the number of leaves in the mid-autumn period. After collecting the leaves, the tip of the mulberry should retain at least 4-5 leaves, and its rearing volume accounts for 10%-20% of the silkworm.
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