A method for planting green manure by using film-covered tobacco ridges in winter fallow

Abstract

The invention discloses a method of overlaying a film on a cigarette ridge and planting green manure in a slack winter season and belongs to the technical field of flue-cured tobacco plantation technology. The method comprises the following steps of (1) applying base fertilizer on a cigarette land in March of the first year, ridging and overlaying a mulch film, conducting fixed-distance transplanting according to normal progress and managing field, and maintaining the film on the land for the whole process, (2) eliminating residual cigarette plants on the cigarette ridge after flue-cured tobacco harvest in September of the first year, punching holes on two sides of the film-overlaid cigarette ridge in a parallel way, (3) eliminating the mulch film and turning over oilseed rape via a rotary cultivator after oilseed rape sedge period finishes in the next year and burying the oilseed rape into the soil for two to three months, then planting cigarettes again and repeating the shifting cultivation process. In the second step, the hole punching depth is 13 to 16cm; the distance between two holes on the same side is 0.2m; and oilseed rape seeds are placed in each hole. A problem of oilseed early blossoming can be avoided; labor intensity and labor cost can be reduced; soil fertility can be improved; and cigarette field shifting cultivation efficiency can be improved.

Description

technical field [0001] The invention relates to a green manure planting technology in a tobacco field, in particular to a method for planting a green manure by utilizing film-covered tobacco ridges in winter slack. Background technique [0002] With the rapid development of flue-cured tobacco production in China, long-term large-scale application of chemical fertilizers and unreasonable crop rotations have caused soil compaction, acidification, soil nutrient imbalance, soil fertility has declined year by year, and soil-borne diseases have aggravated. Green manure is a high-quality biological fertilizer source with complete nutrients. It plays a good role in providing nutrients needed by crops, improving soil, improving farmland ecological environment, and preventing soil erosion and pollution. After green manure is buried in the soil, through decomposition and mineralization, it provides a large amount of nitrogen and various nutrients for the current crop or the next crop t...

AI Technical Summary

Problems solved by technology

[0004] Analyzing the existing technology, it can be found that most of the literatures excessively increase the biomass of green manure when it is overturned, which will easily reduce the improvement effect of green manure itself on the soil, resulting in excess nutrition, and because of the pursuit of high biomass, many studies only focus on how to increase the biomass. The amount of biomass has not been optimized; the time for planting green manure is mostly concentrated from August to December. During this period, the temperature gradually decreases, which will easily lead to early flowering of green manure, which is not conducive to the growth of green manure vegetative organs, and the decomposition after overturning With incomplete mineralization and longer time, the effective biomass for soil improvement is greatly reduced