1. Symptoms mainly affect the leaves. Leaf spot round or suborbicular, born in semicircle of leaf margin or tip, 2 to 15 mm in diameter or more, brown margin, middle to pale brown to grayish brown, with obvious or inconspicuous surface Patterns, scattered on the wet or black particles that…
Summer cultivation of autumn tomatoes, summer peppers, summer cabbage, summer radish, summer cowpea, summer cucumber and other varieties suitable for large-scale development. The common point of these vegetable cultivations is to apply sufficient basal fertilizer and adopt deep ditch sorgh…
Recently, some vegetable traders in Qingzhou City, Shandong Province, have been reported to use vegetable solution to spray cabbage to preserve freshness. A field survey by reporters found that this practice did exist in some long-distance transport of spring cabba…
Affected by the climate, the unbalanced growth of rapeseed in our province is quite outstanding this year. In some places, the standard of ditch is not high, the waterlogged fields and grassland are heavy and the proportion of weak seedlings is high, and the pressure to strengthen field ma…
1. Choose arrow peas.
2, timely sowing grapes are mostly listed in June, basic sales in mid-August, combined with rainfall, do a good job robbing sowing.
3, the amount of seeding 2-3 kg / mu.
4. Settlement on the grape ditch for shallow cultivating, so as not to hur…
Problems to be Noted in Corn Production in Spring 2016:
1. Effectively strengthen the construction of farmland water conservancy and timely renovate relevant agricultural machinery.
2, choose a relatively drought-resistant varieties
(1) Selection of control cultivar…
Potatoes, like other crops, have their own unique requirements for environmental conditions during each period of growth and development. Whether these conditions can be met will determine whether its plant growth is robust and coordinated, and whether it can achieve higher yields. Potato …
1. Selection of fattening cattle. All healthy bred cows, adult cattle, and shelf cattle can be fattened. However, it is best to choose bulls with large skeletons and excellent breeds or crossbreeding cattle, and the best weight is 250-350 kg.
2. Grouping and deworming. Before the s…
China's in vitro diagnostic industry is developing at a high speed. In the next five years, CAGR is expected to exceed 20%. Accurate medical care will promote the outbreak of POCT and genetic diagnosis enterprises.
POCT (instant dete…
Cholera toxin is composed of two subunits (Cholera toxin, CT), namely A subunit (CTA) and B subunit (CTB). The A subunit is the active part of the cholera toxin, and the main function of the B subunit is to allow the A subunit to enter the cell by binding to the …
1. Nutritional factors: excessive feed nutrition or lack of a certain kind of vitamins leads to excessive fat or too thin, so that the female rabbit does not have estrus or estrus is irregular; 2. Seasonal factors: summer moulting, winter cold, will make the female rabbit stop estrus or Ir…
An appropriate amount of water is contained in the pump body as a working fluid. When the impeller rotates clockwise in the direction indicated in the figure, the water is thrown around by the impeller. Due to the …