Method for realizing yield increase of flue-cured tobacco through densely-sown seedling raising and optimized transplanting

Abstract

The invention discloses a method for realizing yield increase of flue-cured tobacco through densely-sown seedling raising and optimized transplanting. According to the method, tobacco seedlings are cultivated by a floating-disc densely-sown method, water is impounded by a rainwater collecting technology so as to fight a drought, and the tobacco seedlings can be transplanted at an appropriate period by using a shaft well type young seedling transplanting method. The method is characterized by comprising the steps: carrying out floating-disc densely-sown flue-cured tobacco seedling raising by increasing the quantity of holes of floating discs so as to culture the tobacco seedlings with four leaves and one core; carrying out optimized tobacco seedling transplanting, carrying out subtillage winter resisting, land preparation, band application and ridging in good time, then, transplanting the tobacco seedlings with four leaves and one core by the shaft well type flue-cured tobacco young seedling transplanting method; and carrying out management according to the conventional method after transplantation. By adopting the method, under usual circumstances, the time for seedling raising is shortened by 30 days, and labor for seedling raising and transplanting is saved; and the transplanting time is advanced by 15 days, and the yield of tobacco leaves is increased by 16kg per mu. According to the method, for plateau canyon regions where tobacco is suitable for being planted but often encounters spring drought, the problems that the seedling raising cost of the flue-cured tobacco is high and transplanting is difficult during spring drought can be solved, the production cost investment of the flue-cured tobacco can be reduced, and the yield and output value of the flue-cured tobacco are increased.

Description

technical field [0001] The present invention relates to the cultivation of flue-cured tobacco, and furthermore, to flue-cured tobacco sowing, seedling raising and seedling transplanting techniques, in particular to the technology of increasing the yield of flue-cured tobacco through dense sowing seedling cultivation, shortening the seedbed period, early transplanting of seedlings, and using rain collection to resist drought and preserve seedlings. Background technique [0002] In the existing floating seedling cultivation, the growth time of tobacco seedlings in the seedbed stage is longer, generally more than 65 days; the water evaporates quickly in the later stage of the seedbed, and generally needs to replenish water for 3 to 5 times. Land seedling fee needs to be 1800 yuan / hm 2 It accounts for about 10% of the production cost; through research, it is known that: labor costs, seedling substrates, water for seedlings, floating trays, land for seedlings, etc. account for mo...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a method for increasing the yield of flue-cured tobacco through dense sowing seedlings and optimized transplanting, so as to solve the problem that the spring dry tobacco seedlings cannot be transplanted at the optimal time, and improve the yield and value of flue-cured tobacco

Images