1. Use quicklime to neutralize acidity, 40-50 kg per mu, evenly applied in site preparation. Afterwards, the annual application amount is reduced by 1/2 until it is transformed into neutral or slightly acidic soil.
2. Plant green manure and increase organic matter.
3. Incre.......
Release date: 2010-03-12
Like the foundation of a house, healthy gums are the foundation of the teeth, providing the teeth with the functions t.......
Due to seasonal restrictions on agricultural machinery, the working time is very short each year. For example, planters, harvesters, rotary cultivators, etc. work less than one month a year, the rest time is relatively long, if not good care at rest The damage caused often exceeds the dama.......
With the rapid development of vegetable planting area and the increase in the introduction and development of specialty vegetables, farmers' heavy cropping and non-standard application of pesticides have caused a wide range of diseases and complex situations in vegetable production. Ma.......
The symptoms are also called spot blotch. Distributed in Shandong, Northeast China, Hebei, Xinjiang, Guizhou, Taiwan, etc. The main damage leaves. At the beginning, the veins in the beginning are polygonal or irregular to elliptic yellow-white hazel to gray-br.......
Mixed application precautions
The so-called mixed fertilizer application refers to two or more fertilizers such as nitrogen, phosphorus, and potassium fertilizers, or quick-acting fertilizers and slow-acting fertilizers that have different properties and have different effects acco.......
The symptoms are also known as kenaf or leaf coal disease. All parts of the country have occurred. Mainly in the growth of kenaf, late. The diseased leaves were initially unclear with light yellow to brown irregular lesions, and later in the corresponding part.......
The scientific name Prodenia litura (Fabricius) Lepidoptera, Noctuidae. Synonyms Spodoptera litura (Fabricius). Alias ​​lotus moth, lotus pattern night moth. Distributed throughout the country.
The hosts include more than 290 varieties of 99 families including crucife.......
Temperature-water fish (such as tilapia, squid, pond gizzards, gemstone clams, freshwater white clams, etc.) are poor in resistance to low temperatures. When the water temperature drops to its critical lethal temperature, insulation measures must be taken or the fish will freeze. After de.......
Symptoms of seedlings cause cataplexy. Lesions in the leaves produce tan irregular spots. An oblong brown ulcer spot develops on the petiole. The stalk stems have spindle-to-strip lesions that spread to the entire stem, causing the stems to dry up, and the sur.......
Adult larvae and larvae often live on Osmanthus fragrans twigs and absorb sap, which causes the branches and leaves to wither and cause serious death of the entire plant. This often causes a large amount of honeydew to be excreted and causes the occurrence of soot. Leaf stems are covered w.......
Symptoms of sorghum start before and after heading. At the beginning, red or purple to light brown spots were formed on the leaves, followed by the expansion of pathogenic bacteria, and the spots expanded to form an oval-shaped bulge on the surface of the leav.......