Green Chinese onion fertilizing method for reducing soil nitrate nitrogen leaching loss
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A fertilization method and nitrate nitrogen technology are applied in the field of agricultural cultivation to achieve the effects of improving nitrogen fertilizer utilization, improving fertilizer production efficiency and reducing threats
Active Publication Date: 2013-05-22
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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So far, there is no report on the method of fertilizing green onions b
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Embodiment 1
[0037] In 2011, a green onion cultivation experiment was carried out in Zaoyuan Town, Zhangqiu City, Shandong Province, with an area of 667m2 2 , the planting mode is wheat-green onion rotation. The last crop, wheat, was harvested on June 10, green onions were planted on June 23, and harvested on November 22. The tested variety was the local main variety "Dawutong".
[0038] Fertilizer management is carried out according to the fertilization method of the present invention, and other management is as by prior art.
[0039] (1) Determine the total amount of chemical fertilizer: According to the cultivation experience, the target yield of scallions is determined to be 4000kg / mu, and the total amount of nitrogen fertilizer = 4000kg / mu × 0.0045 × 1 mu = 18kg, the total amount of phosphate fertilizer = 18kg × 0.5 = 9kg, and the total amount of potassium fertilizer are calculated =18kg×1.1=19.8kg.
[0040] (2) Soil carbon increase: After the wheat is harvested, all the straw is ...
Embodiment 2
[0055] In 2012, a green onion cultivation test was carried out in Ningjiabu Town, Zhangqiu City, Shandong Province, with a test area of 1000m 2 , the planting mode is scallion monocropping, and the tested variety is the local main variety "Qishafeng". Green onions were planted on June 27 and harvested on November 25. Fertilizer management is carried out according to the fertilization method of the present invention, and other managements are as usual.
[0056] (1) Determine the total amount of chemical fertilizer: According to the cultivation experience, the target yield of scallions is determined to be 3500kg / mu, and the total amount of nitrogen fertilizer = 3500kg / mu × 0.0045 × 1.5 mu = 23.6kg, the total amount of phosphate fertilizer = 23.6kg × 0.5 = 11.8kg, The total amount of potassium fertilizer = 23.6kg × 1.2 = 28.3kg.
[0057] (2) Soil carbon increase: On June 10, 225kg of crushed and air-dried wheat straw was applied to the test area.
[0058] (3) Base fertilizer...
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Abstract
The invention relates to a green Chinese onion fertilizing method for reducing soil nitrate nitrogen leaching loss. The method comprises the steps of: (1) determining total dosage of chemical fertilizers according to target yield; (2) carrying out soil recarburization by crop straw mulching or independently fertilizing aired and crushed crop straws; (3) fertilizing a base fertilizer: fertilizing 400-600kg/mu of an organic fertilizer and 30% of a nitrogenous fertilizer, 50% of a phosphatic fertilizer and 20% of a potash fertilizer; and (3) fertilizing residual fertilizer as top application at the moments of autumn begin, white dew, and autumnal equinox by three times respectively. The reasonable control of a carbon-nitrogen source and the precise fertilization of the fertilizers are taken as cores; different fertilization schemes are adopted at different growth stages of crops; the green Chinese onion fertilizing method accords with the nutrient requirement rule of green Chinese onions; the production efficiency of the fertilizer is improved on the basis of ensuring the yield of the crops; and the pollution of the soil nitrate nitrogen leaching loss to a groundwater environment is obviously reduced.
Description
technical field [0001] The invention relates to a scallion fertilization method, in particular to a fertilization method based on ensuring crop yield and reducing soil nitrate nitrogen leaching loss, and belongs to the technical field of agricultural cultivation. Background technique [0002] In recent years, with the increasing degree of agricultural intensification, leaching of nitrate nitrogen from soil due to irrational application of nitrogen fertilizers is very common, and nitrate pollution has become one of the main types of groundwater pollution in intensive agricultural areas. On the other hand, groundwater is a very precious resource, and it is the only source of water supply in many parts of the world. Most of the drinking water in rural areas in my country comes from groundwater. NO in underground drinking water 3 - Can be reduced to NO in the human body 2 - , NO 2 - It can cause methemoglobinemia and form carcinogenic nitrosamines. Swedish studies have als...
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IPC IPC(8): A01C21/00
Inventor 高新昊刘兆辉李彦江丽华孙明刘苹张英鹏仲子文
Owner INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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