A nitrogen fertilizer application method for improving cucumber malonic acid content
A technology of tartronic acid and application method, which is applied in the direction of fertilization method, application, fertilization device, etc., can solve the problem of low content of tartronic acid, achieve the goal of increasing the content of tartronic acid, increasing the content, and preventing fat accumulation Effect
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Embodiment 1
[0015] This example illustrates the effect of different amounts of nitrogen fertilizer on the content of propanol in cucumber fruit.
[0016] Cucumber variety tested: Dongnong 808, a cucumber variety with high propanol content. The experiment was sown on March 27, 2015, and planted in the plastic greenhouse of the experimental base of the Agricultural College of Heilongjiang Bayi Agricultural University on May 16. The soil type in the greenhouse is meadow chernozem, the basic agrochemical status of the 0-20cm plow layer soil is: soil alkaline nitrogen 184.7mg / kg, available phosphorus 21.4mg / kg, available potassium 237.7mg / kg, organic matter content 3.38% , pH 7.83, total salt 0.10%.
[0017] Basic fertilizer: (KH 2 PO 4 (P2O5: 52%, K 2 O: 35%), potassium sulfate (K 2 SO 4 (K 2 O: 54%)), urea (CO(NH 2 ) 2 , N: 46%).
[0018] per mu (667m 2 ) Apply 2500kg of organic fertilizer, 20kg of potassium dihydrogen phosphate, and 60kg of potassium sulfate. The amount of urea ...
Embodiment 2
[0026] This example illustrates the effect of different nitrogen form ratios on the content of tartronic acid in cucumber.
[0027] In result (1) the optimum nitrogen dosage is 80kg·667m -2 Urea (the amount of pure N is 36.8kg·667m -2 ) on the basis of amide nitrogen-urea as the control (CK), amide nitrogen (urea), NH 4+ -N(ammonium sulfate) and NO 3— N (calcium nitrate tetrahydrate) was used to set up three treatments with the ratio of pure nitrogen as 2:1:1 (T1), 1:2:1 (T2), and 1:1:2 (T3). Other fertilizer application methods and fields The management measures are the same as before. That is, 1 / 4 of the nitrogen fertilizer is used as the base fertilizer, and 3 / 10 of the remaining 3 / 4 of the nitrogen fertilizer is applied at the early fruiting stage of the cucumber, and the same amount is applied in 3 times; / 10, divided into 7 equal doses.
[0028] The urea consumption of the control, CK, is 80kg·667m -2 ; The amount of T1 nitrogen fertilizer is (urea 40kg + ammonium ...
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