High-concentration leaf vegetable water planting nutrient solution and application thereof in leaf vegetable water planting

Abstract

The invention discloses a high-concentration leaf vegetable water planting nutrient solution and application thereof in leaf vegetable water planting. Every liter of the water planting nutrient solution comprises 150-300g of magnesium sulfate, 20-35g of potassium sulfate, 300-380g of calcium nitrate, 150-200g of potassium nitrate, 80-100g of monopotassium phosphate, 10-25g of ammonium dihydrogen phosphate, 0.1-1.0g of EDTA (ethylene diamine tetraacetic acid) copper, 0.1-0.8g of ammonium molybdate, 15-30g of DTPA (diethylenetriaminepentaacetic acid) iron, 1.0-2.5g of EDTA zinc, 5.0-9.5g of EDTA manganese, 8-15g of boric acid and the balance of water. In addition to essential nutrient elements for leaf vegetables to grow, different metal chelates such as EDTA zinc, EDTA manganese, EDTA copper and DTPA iron are used as zinc, manganese, copper and iron trace element sources of the high-concentration leaf vegetable water planting nutrient solution, the absorption and utilization rates of zinc, manganese, copper and iron elements by leaf vegetable crops are increased, particularly the DTPA iron has ideal effects when being compared with other iron salts, and the problem that trace elements such as an inorganic zinc salt, a manganese salt, a copper salt and an iron salt in a common water planting nutrient solution in the market have low plant absorption rates can be well solved.

Description

technical field [0001] The invention relates to the technical field of soilless cultivation, in particular to a high-concentration leaf vegetable hydroponic nutrient solution and its application in leaf vegetable hydroponic cultivation. Background technique [0002] Hydroponics is a new type of plant soilless culture (Soilless culture). It is an ancient and modern planting technology. It is not only simple and convenient, not limited by farmland, not affected by the weather, but also more than traditional More than 90% less water consumption for cultivated land cultivation. The fruit and vegetable crops produced can avoid soil disease infection, heavy metal pollution, and no pesticide residues. It can provide safe and high-quality fruit and vegetable food for human beings, so it is strongly recommended by scientists and environmental protection workers around the world. [0003] The development of hydroponic application in my country started relatively late. At present, the...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: aiming at the defects of using inorganic salt trace element source in the common hydroponic nutrient solution on the market at present, to provide a kind of water that is beneficial to the root system absorption of leafy vegetable crops and has less inorganic metal salt residue in