Method for reducing content of nicotine in tobacco leaves on upper part of flue-cured tobacco
A technology for flue-cured tobacco and content, which is applied in fertilization methods, horticultural methods, botanical equipment and methods, etc., can solve the problems of large fluctuation, insufficient nitrogen, and reduce the nicotine content of flue-cured tobacco, so as to reduce runoff or leakage, reduce Effective nitrogen content and the effect of protecting the agricultural environment
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Embodiment 1
[0032] Example 1 A method for reducing the nicotine content of the upper tobacco leaves of flue-cured tobacco
[0033] Include the following steps:
[0034] (1) Nursing
[0035] Put soil in the test pots, 25kg of soil per pot, the specifications of the test pots are: upper mouth diameter 44cm, height 36cm, then fertilize, the total nitrogen application rate is 90 kg N / hm 2 . Nitrogen, phosphorus and potash fertilizers according to N:P 2 o 5 :K 2 O = 1:1:2.5 (based on the amount of nitrogen applied), the mass ratio is applied, the phosphorus fertilizer is used as the base fertilizer, and the nitrogen and potassium fertilizer is applied twice, accounting for 70% of the total. The nitrogen and potassium fertilizer is used as the base fertilizer (the base fertilizer is mixed with the soil) into the pot), to ensure that the N, P, and K fertilizer levels of flue-cured tobacco in each pot are consistent.
[0036] The seedlings of flue-cured tobacco were raised in the above pots...
Embodiment 2
[0055] Example 2 A method for reducing the nicotine content in the upper tobacco leaves of flue-cured tobacco
[0056] Adopt the method of embodiment 1, change the kind of exogenous carbon, adding concentration, application frequency etc., carry out test,
[0057] The experimental design is shown in Table 1. Carbon sources were added to the soil 90 days and 120 days after transplanting.
[0058] Among them, sawdust is added in the form of ring application, and glucose is added to the soil in the form of a solution, which is also added to the ring.
[0059] Each treatment was repeated 3 times.
[0060] According to the method described in Example 1, various indicators were detected, and the results are shown in Table 2-5.
[0061] Table 1 Experimental design (including carbon source type, carbon source addition time and addition amount)
[0062]
[0063] Note: G2 means only adding 2000 mg C kg on the 90th day after transplanting -1 Glucose; G5 means only adding 5000 mg C...
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