Flue-cured tobacco, corn and green manure intercropping and crop rotation planting method

Abstract

The invention provides a flue-cured tobacco, corn and green manure intercropping and crop rotation planting method, and relates to the technical field of planting. The planting method comprises the following steps: (1) land preparation, (2) flue-cured tobacco planting, (3) corn planting, and (4) green manure planting. According to phenological characteristics of a flue-cured tobacco-corn crop rotation planting system, proper green manure crops are selected to be planted in an inserted mode, photo-thermal resources of main crops in the neutral period are fully utilized, meanwhile, malignant weed growth caused by idling of land seasons is inhibited, nutrient characteristics of main crop straw and the green manure crops are fully utilized, a healthy, clean and nutrient-balanced organic fertilizer is prepared on site, the organic fertilizer is turned, pressed and returned to the field, the soil fertility is improved, and the green agricultural development concept of fertilizer and pesticide reduced application is practiced.

Description

【Technical field】 [0001] The invention relates to the technical field of planting, in particular to a method for planting flue-cured tobacco, corn and green manure between, covering and rotating crops. 【Background technique】 [0002] Flue-cured tobacco is one of the important economic crops in my country and occupies an important position in the national economy. In 2006, the tobacco planting area was 15.72 million mu, and the tax revenue reached 290 billion yuan, ranking first in the single tax revenue of all industries in the country. However, studies have shown that continuous cropping inhibits the growth of flue-cured tobacco and reduces yield and quality. The main reasons are that continuous cropping causes severe pests and diseases, accumulation of allelochemical substances, and imbalance of soil nutrients. On the one hand, the amount of chemical fertilizers used and the continuous cropping years of tobacco fields have been increasing. On the other hand, the lack of g...

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Problems solved by technology

However, studies have shown that continuous cropping inhibits the growth of flue-cured tobacco and reduces yield and quality.

On the one hand, the amount of chemical fertilizers used and the continuous cropping years of tobacco fields have been increasing. On the other hand, the lack of good soil fertility measures has made the soil of tobacco fields more compacted and the soil environment has deteriorated. Effective and continuous use leads to the reduction of tobacco leaf quality and industrial usability and the decline of tobacco planting benefits. Unreasonable fertilizer application and continuous cropping have become important factors that limit the sustainable development of flue-cured tobacco.

[0003] At present, the effective measure to overcome the obstacles of continuous cropping is crop rotation. Although the production mode of flue-cured tobacco and corn rotation can meet the people's demand for corn and flue-cured tobacco at the same time, and improve the production capacity per unit area of ​​land, if this kind of multi-cropping and continuous cropping is adopted all the year round, the soil will become barren. It is getting more and more serious, especially the production capacity of flue-cured tobacco is severely reduced, and the production reduction can reach 20-40%

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