(a) Real seedlings The seed of Syzygium rosenbergii is polyembryonic, in which the seedlings developed from the heart embryos can retain the traits of the mother plants, so Syzygium can be planted with seedlings. However, the sexual seedlings developed from the seedlings and sexual embryos are.......
The human and material resources invested in the large-scale shed cultivation are much higher than those in open cultivation. The use of greenhouses for cultivating vegetables is for the benefit of most farmers. Therefore, when deciding on the types of vegetables to be grown, the first thing t.......
Goslings like to play with water, but they are afraid of being wet. Facts have proved that humidity is a major factor in the growth and development of various livestock and poultry. In particular, goslings whose regulation system is not yet sound will often cause poor growth of livestock and p.......
Symptoms mainly damage the leaves and leaf sheaths. At the beginning of the disease, it is a white, transparent, small spot, which expands from dark gray to light brown, with a darker edge and a long oval. When there are more lesions, they are combined with moire,.......
The symptoms are also called root rot or black spot disease. Northeast China, North China, Northwest China and Zhejiang Province all occur. Different parts of the growth period can be disease. After the seedlings are unearthed, young leaves and lea.......
Compound fertilizer has the advantages of high nutrient content, less accessory components, and good physical properties. It plays an important role in balancing fertilization, improving fertilizer utilization, and promoting high and stable yields of crops. However, it also has some shortcomin.......
First, when you are driving at a distance on a rainy road at night, there is suddenly no rain in front of you. At this time, you may speed up your speed, think that there is no rain ahead, and the road should be dry. This is a bad judgment. Because the rain just stopped in front will give road.......
Ginger needs a large amount of fertilizer, in addition to applying base fertilizer, fertilizer should be timely. The germination period does not require top dressing. The height of the seedling is 30 cm, the seedling fertilizer is recovered once for 1-2 branches, and the application of ammoniu.......
The use of straw is very extensive. There are straw fertilizers, ruminants, abdomen returning, and straw cultivation for edible fungi in agricultural use; industrial applications include papermaking, straw boards, new wall materials, straw utensils, straw painting, stamping Ri.......
In the hot summer season, if rabbits do not take measures to prevent heatstroke, the growth and development of rabbits will be affected, especially for long-haired rabbits. Therefore, in order to make rabbits safe in summer, various management measures should be taken.
Water quality should be refreshing in the summer. The appetite of the turtle should be exuberant, and the water in the pond should be deteriorating. The new water should be replaced in time according to the number of turtles, the size of the turtle pond, and the water quality. Before changing .......