Fertilizing method for relieving secondary salinization of greenhouse soil
A technology of secondary salinization and fertilization method is applied in the field of fertilization for relieving secondary salinization of soil, which can solve the problems of reducing soluble salt content, secondary salinization of facility soil, and high salt content, so as to reduce excessive accumulation. , avoid the secondary salinization of soil, reduce the effect of excessive accumulation
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Problems solved by technology
 Example 1 Preparation and conductivity detection of low-salt organic fertilizer
 Organic fertilizers for testing: traditional Chinese medicine residue organic fertilizer, pig manure organic fertilizer, chicken manure organic fertilizer, cow dung organic fertilizer;
 The preparation method of traditional Chinese medicine dregs organic fertilizer is as follows: taking the production of 1000kg low-salt organic fertilizer as an example, the specific steps are as follows:
 Composting raw materials: fresh Chinese medicine dregs;
 High-temperature composting: determine the ratio of compost raw materials according to different types of traditional Chinese medicine dregs and their carbon-to-nitrogen ratio nutrient content (the traditional Chinese medicine dregs in this example mainly include Poria cocos, moutan bark, cassia twig, and peach kernels, and mix them with equal mass), carbon The nitrogen ratio is adjusted to 25, the water content is ad...
 Example 2 Field application effect of low-salt organic fertilizer replacing chemical fertilizer technology in greenhouse peppers
 The experiment was conducted in the chili plastic greenhouse in Wharf Town, Huai'an City, Jiangsu Province, from September to December 2017.
 The test crop is pepper, and the variety is Xianhong 1.
 Experimental group: compost traditional Chinese medicine dregs (in this embodiment, mix poria cocos: Moutan bark: cassia twig: peach kernel, etc.), adjust the carbon-nitrogen ratio to 25, adjust the water to 60%, and then carry out high temperature (50-65 ℃) aerobic fermentation, the high temperature time lasts for 50 days, and the pile is turned over every 3 days when the temperature of the pile exceeds 50°C. Low-salt organic fertilizer.
 After testing, the conductivity of the low-salt organic fertilizer obtained in this example is 2.9 mS / cm, N 2.6%, P 2 o 5 1.8%, K 2 O1.7%, organic matter 46.4%, moisture 30%...
 Example 3 The field application effect of the balanced application technology of special water-soluble fertilizer for vegetables
 The experiment was conducted in the chili plastic greenhouse in Wharf Town, Huai'an City, Jiangsu Province, from April to August 2017.
 The test crop is hot pepper, the variety is Sujiao No.17.
 Fertilizers tested: compound fertilizer (15-15-15), compound fertilizer (17-17-17), both purchased from Kingenta Group; high-nitrogen water-soluble fertilizer (22-12-16), high-potassium water-soluble fertilizer (19- 6-25), all purchased from the Chinese Academy of Agricultural Sciences; potash fertilizer (K 2 O 52%), purchased from Shandong Qingshang Chemical Co., Ltd.
 Control group: 6-8 days before transplanting, apply 8 cubic meters of fresh cow dung and 50kg of compound fertilizer (15-15-15) per mu as base fertilizer, and topdress water-soluble fertilizer per mu (16-0-20) 49 days after transplanting 5kg / mu, topdr...
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