Natural coloring feed for laying hens-pine leaves, black locust leaves, moxa leaves
Pine needle powder: air-dry and crush the pine needle. Generally, the addition of 3% to 5% in the feed can achieve a good color effect, and can increase the laying rate by 13%. Robinia pseudoacacia leaf powder: the addition amount of Robinia pseudoacacia leaf powder accounts for 5% of the feed, the effect is better than pine needle, the egg yolk color can be improved from grade 1 to grade 9, and can remain stable. Moxa leaf powder: moxa leaves contain fat, protein and a variety of amino acids and other nutrients. Adding 2% to 3% moxa leaf powder in chicken diet can increase egg production by 12% to 20% and deepen the color of egg yolk.
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Several common diseases and insect pests of Euonymus tomentosa
1. The yellow poplar silk leaf borer larva spun silk to connect the surrounding leaves and twigs as temporary nests, and then ate up the leaves in serious cases, resulting in the death of seedlings. Morphological features: adult body wings are gray-white, the front, outer and trailing edges of the wings are purple-brown wide band, there are two white spots on the leading edge of the purplish brown belt, the scales are shiny, and the purplish red shines. The head of the larva is black, the carcass is yellowish green, the topline, subtopline and valve line are dark green to dark green, and the valve line is orange. Occurrence regularity: 2 to 3 generations a year in the northern region, with larvae
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Big leaf safflower Robinia pseudoacacia
Robinia pseudoacacia is a multi-purpose Robinia pseudoacacia variety cultivated in Germany. Professor Yang Minsheng of Hebei Agricultural University was introduced to China in 1999 from the German Institute of Forest Genetics and Breeding. it is proved that Robinia pseudoacacia has strong adaptability, can grow normally in the suitable growing area of Robinia pseudoacacia in North China, and shows high economic value. Robinia pseudoacacia has a fast growth rate, with a DBH of 9.5cm at 3-year-old, and a large leaf yield with pinnate leaf length 45~60cm, which is higher than that of tetraploid Robinia pseudoacacia.
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