(1) Organic matter is an important source of crop nutrients. When organic matter is decomposed, nutrients such as nitrogen and phosphorus are released for the growth and development of crops, and carbon dioxide generated during decomposition can be used for photosynthesis of crops.
(2) Organic matter has ion substitution, complexation and buffering. The soil organic matter is negatively charged, so it has a strong ability to absorb cations; the complexation of organic matter can improve the solubility of inorganic phosphate minerals and activate trace elements in soil. And because the organic colloid has the action of amphoteric colloid, it has a strong buffering capacity for acid and alkali.
(3) Organic matter can improve the physical and chemical properties and physical and mechanical properties of the soil. In particular, humus, which is a cement forming a water-stable aggregate structure.
(4) Organic matter can promote the activity of soil microbes and stimulate the growth of crops.
So how do we increase the organic matter content in the soil? First, the large application of manure, compost, mud, green manure and legumes are effective measures to increase soil organic matter and improve fertility. Secondly, we must pay attention to the control and regulation of the accumulation and decomposition of organic matter, so as to ensure the needs of nutrients in the current season, and to accumulate organic matter, and continuously improve soil fertility. Measures such as irrigation and drainage can effectively control the accumulation and decomposition of organic matter. For example, compared with dry land, irrigation of rice is conducive to the accumulation of organic matter, while paddy fields can be dried and baked, ploughed and sun-dried, and promote organic matter. Decompose to release nutrients.
What are pull out Kitchen Faucets?
A pull-out faucet has a faucet head/sprayer that pulls out towards you.
Whats the difference between a pull down and pull out faucet?
What's the difference between a pull-down and pull-out faucet? With a pull-down faucet, the spray wand is an extension of the faucet that you can literally pull down, whereas you need to pull out a pull-out spray wand. A pull-out wand can also be a part of the faucet or mounted separately on the sink ledge.
Which is better pull down or pull out kitchen faucet?
Pull-out faucets take up much less headroom than a pull down model, making it a great choice for kitchens with cabinet space above the sink. ... If you have a shallow sink, a pull-out faucet may be more beneficial, as it has less splashback than the pull-down model.
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