Big leaf safflower Robinia pseudoacacia
Robinia pseudoacacia L. is a versatile locust variety bred in Germany. It was introduced to China by Professor Yang Minsheng of Hebei Agricultural University in 1999 from the Institute of Forest Genetics and Breeding in Germany. After nearly 5 years of introduction test and demonstration planting, it has been proved that Robinia pseudoacacia L. has strong adaptability and can grow normally in the suitable areas of Robinia pseudoacacia L. in North China, and shows high economic value. Robinia pseudoacacia L. has fast growth speed, DBH up to 9.5cm at 3 years old, large leaf yield, pinnate leaf length 45~ 60cm, 10~ 17cm longer than tetraploid Robinia pseudoacacia L., 26- 31cm longer than common Robinia pseudoacacia L., leaflet length 8~ 13cm, width 5~ 8cm, 4~6cm longer than tetraploid Robinia pseudoacacia L., thick leaves, rich nutrients, in the dry matter of leaves, the highest content of crude protein up to 21%, crude fat 4.2%; Wide adaptability, strong resistance. It can be used as fodder forest, garden greening, farmland protection forest, timber forest, honey forest, firewood forest, etc., and has extremely high popularization value.
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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 3%.
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Clear cutting and regeneration of Robinia pseudoacacia by ditching with big plough
1. To prepare for the work, the big plough is to use a tractor to drive the big plough to plow the furrow in the felled land of Robinia pseudoacacia, which requires a tractor with high horsepower, and the big plough can use the iron plough used in ordinary farmland, but it requires the use of a single plough. Clean up the branches and big stones in the ground first. two。 The selection of ploughing and trenching requires a concentrated connection of the land, with a slope of less than 25 degrees and a soil layer of more than 30 centimeters. 3. According to the technical requirements, the root distribution of Robinia pseudoacacia is shallow, the main root is not obvious, the lateral root is well developed, and the main lateral root is mostly distributed in the soil with a thickness of 20cm to 30cm.
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