Soil improvement method for reducing successive cropping obstacles of greenhouse watermelons

Abstract

The invention discloses a soil improvement method for reducing successive cropping obstacles of greenhouse watermelons. The method comprises the steps of high-temperature greenhouse closing and fertilizing treatment. The high-temperature greenhouse closing includes plot cleaning, uniform scattering and application, deep ploughing, rectangular piece making, ground sealing, water irrigation, closingand film uncovering and air-drying. The fertilizing treatment is that plots in the step 1 are treated by using lime nitrogen for 1 week, then 800 kg of a bio-organic fertilizer or 500 kg of a biological bacterial fertilizer are applied per mu, or 1000 kg of conventional farmyard manure are applied per hectare to improve a soil environment, beneficial soil microbes are supplemented, a fertilizer often used by peasants, the biological bacterial fertilizer and the bacterial manure are generally applied, then thorough bottom water is executed, deep ploughing of 25-30 cm is executed, fine harrowing, leveling and soil moisture preservation are executed. According to the soil improvement method, lime nitrogen is adopted for high-temperature sterilization in time and cooperates with application of the bio-organic fertilizer or the biological bacterial fertilizer to kill harmful microbes of soil, improve pH, supplement beneficial microbes and promote watermelon seedling growth, and the soil improvement method has the advantages of reducing the harm of successive cropping obstacles and improving the soil for greenhouse watermelons with successive cropping obstacles.

Description

technical field [0001] The invention relates to a soil improvement method, in particular to a soil improvement method for reducing barriers to watermelon continuous cropping in facilities. Background technique [0002] The study found that due to the high cost of construction and management of watermelon greenhouse facilities, the annual production and use period is long, and it is difficult to carry out crop rotation. In the watermelon protected cultivation process, it is common to apply heavy chemical fertilizers but light organic fertilizers, heavy nitrogen fertilizers light potassium fertilizers, resulting in imbalance of soil nutrients, excess nitrogen and phosphorus, lack of potassium, secondary salinization aggravation, and deterioration of soil physical properties. Poor permeability. Further cause the vitality of the watermelon root system to decline, the growth period, especially the seedling stage, is stunted, and the yield and quality are greatly reduced. The so...

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Problems solved by technology

[0002] The study found that due to the high cost of construction and management of watermelon greenhouse facilities, the annual production and use period is long, and it is difficult to carry out crop rotation

In the watermelon protected cultivation process, it is common to apply heavy chemical fertilizers but light organic fertilizers, heavy nitrogen fertilizers light potassium fertilizers, resulting in imbalance of soil nutrients, excess nitrogen and phosphorus, lack of potassium, secondary salinization aggravati

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