Cultivation method for improving photosynthetic efficiency of tobacco

Abstract

The invention discloses a cultivation method for improving the photosynthetic efficiency of tobacco, which belongs to the field of crop planting method. The cultivation method comprises specification and arrangement method of ridges of a tobacco cultivation land, and a transplanting method of tobacco plants; and the cultivation method is characterized in that high and low soil ridges are arranged at specified intervals, low ridges are arranged at two sides of each high ridge, and high ridges are arranged at two sides of each low ridge. The transplanting of tobacco plants is as follows: the tobacco plants are planted in a staggering way at two sides of the surface vertical axes of the high and low ridges with equal distance to the axes, the axial distances between the staggeringly planted adjacent tobacco plants are the same, and the tobacco plants are distributed in a wave mode on the surfaces of the high and low ridges which are arranged at intervals. Compared with the traditional cultivation method, the cultivation method disclosed by the invention enables the plant spacing to be increased by 4 to 14 centimeters, the net photosynthetic rate of tobacco growing stage is improved by 5 to 70 percent, the tobacco yield is increased by 10 to 30 percent, the quality of tobacco leaf is remarkably improved, and the harmful component TSNAs of tobacco is reduced by 5 to 30 percent so that the industrial usability of the raw tobacco material can be greatly improved.

Description

technical field [0001] The invention relates to a cultivation method for improving the photosynthetic efficiency of tobacco, which belongs to the field of crop planting methods, and in particular relates to a cultivation method for improving crop photosynthetic environment and increasing production. Background technique [0002] Compared with the world's high-quality tobacco leaf countries, my country's tobacco leaf producing areas generally suffer from insufficient light resources during the field growth period, which leads to varying degrees of restrictions on tobacco leaf production and quality. Improving the utilization rate of photosynthetically active radiation so as to improve the level of yield and quality has always been the goal pursued by the tobacco planting field. At present, there are three main ways to improve the utilization rate of photosynthetically active radiation of crops, that is, to increase the photosynthetic efficiency of crops: [0003] (1) Accordi...

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Problems solved by technology

For example, the patented three-dimensional planting method of wheat in furrows and ridges with the publication number CN1774970 discloses a method of raising ridges in the field and simultaneously sowing seeds on the ridges and in the furrows, so that the wheat field forms a high-light-efficiency canopy structure with ups and downs of wheat rows. The disadvantage is that direct sowing in the furrow is not conducive to the drainage and waterlogging of the crops in the furrow

Another example is that the patented rice terraced cultivation method with the publication number CN101904285A discloses a cultivation technique for raising paddy fields and planting rice respectively on both sides of the paddy field to increase the utilization area of ​​the paddy field and the light-receiving area. Conventional technology significantly increases the amount of labor required for ridging, and is not convenient for the current horizontal mechanized harvesting

[0006] In tobacco cultivation technology, intercropping or intercropping with other crops is generally not advocated because the quality of tobacco leaves is easily affected by other crops and is easy to be infected by other crops. Moreover, with the sharp increase in agricultural labor costs today, many are more cumbersome. The cultivation techniques and measures are no longer suitable for the technical needs of tobacco leaf producing areas in my country

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