First, reduce pollution sources. Nitrogen is one of the main elements that cause environmental pollution in excreta. Nitrogen in excreta generally accounts for 2.0% to 6.0% of dry matter (33% in feces …
Lack of colostrum
As soon as possible, the countermeasures allow the lamb to eat colostrum. The amount of colostrum taken by the lamb is roughly 5% of its live weight. For example: 1 lamb of 4.5 kg should eat 225 grams of colostrum, of which, after birth, the sooner you eat, the be…
A period of time from the jointing of the corn to the tasseling is called the period of the ear. Fertility characteristics at this stage are: vegetative growth and reproductive growth go hand in hand, leaves increase, elongation of stem sections, nutrient growth, while the male and female …
(I) Diagnosis
According to the epidemiological characteristics, combined with the comprehensive analysis of clinical symptoms and pathological changes, a preliminary diagnosis can be made. Confirm that laboratory tests are required.
1. Virus isolation and identification …
Although edible cactus is resistant to thin, it is still a soft spot for loose, fertile soil. The requirements for fertilizers are: first, complete decoction; second, excessive salt; third, nitrogen fertilizer, supplemented by phosphorus and potash. Basal fertilizer can be used to compost …
Maize is a high-yielding crop and requires a large amount of fertilizer. Scientific fertilization is the key to obtaining high and stable yield of corn. According to the law of demand of maize, it is necessary to determine a reasonable method of fertilization and determine the proportion o…
In addition to nutrients in the roots of plants, leaves and green shoots can also absorb nutrients. Spraying the nutrient-containing solution onto the aerial parts of the crop (mainly the leaves) is called extra-root fertilization.
The advantages of extra-root fertilization are: …
Scientific name Phytomyza syngenesiae Hardy Diptera, Lepidoptera. Distribution occurs in both southern and northern China.
Host chrysanthemum and asteraceae weeds.
The main characteristics of the damage are larvae that invade the leaves and dri…
One orchard covered grass
The orchard ground covered with wheat straw, rice straw, and mountain grasses can greatly increase the soil organic matter content, improve the soil structure of the garden, and improve the drought resistance of fruit trees; the orchard grass cover is carr…