Method for producing water-retaining lightweight degraded nutritional block for cultivation of tidal marsh forestation seedlings

Abstract

The invention relates to a method for producing a water-retaining lightweight degraded nutritional block for the cultivation of tidal marsh forestation seedlings, which comprises the following five steps of: 1, preparing materials, namely pressing a load bearing body by selecting biomass slurry and a biomass water-retaining agent of which the water absorption is up to 1,000 to 1,200 g / g as raw materials, and selecting loosened lightweight nutrition-enriched and water-retaining raw materials as a nutritional substrate; 2, manufacturing a die and selecting a pressing machine; 3, pressing the load bearing body; 4, preparing the nutritional substrate; and 5, producing the nutritional block. The nutritional block produced by the method is suitable for seedling cultivation and transplantation of agriculture and forestry and particularly provides the excellent growth condition of the seedling stage for the seedling cultivation and growth of coastal salt licks and the survival and forest establishment of forestry land forestation; and compared with the prior art, the load bearing body is penetrated by root systems of nursery stocks easily and has the characteristics of solidifying during drying and absorbing water during humidity, the substrate is rich in nutrition, lightweight and water-retaining, and the biomass water-retaining agent can release moisture and nutrient substances slowly, and is degraded finally to form a soil organic matter to improve a structure of soil.

Description

technical field [0001] The invention relates to a method for producing a water-retaining light-weight degradable nutrient block for cultivation of tidal afforestation seedlings by using degradable superabsorbent resin, carbonized rice husk and other main raw materials. Background technique [0002] Soil salinization has become a global problem. With the rapid development of agricultural and forestry production and the rapid development and utilization of land resources, the problems of soil salinization and secondary salinization are becoming more and more serious. According to statistics, the saline soil in the world is estimated to be 1 million to 1.5 million hm per year. 2 speed growth. my country has about 99.13 million hm 2 saline soil, the potential salinized soil is about 17.33 million hm 2 . As of 2008, about 80% of the saline soil in my country has not yet been developed and utilized. Soil salinization is not only a major factor that restricts the development ...

AI Technical Summary

Problems solved by technology

At present, the method of afforestation is generally used for vegetation restoration, but the survival rate of afforestation is low, and there is no set of successful simple and easy supporting technologies at home and abroad.

[0004] CN 201234473Y announced the utility model patent technology of Dou Yongwei and Qin Weizhi's "plant nutrition block for desert greening". It is cumbersome, and the water absorption rate of mineral water retaining agent is low

CN 201504464U and CN 201274685Y respectively disclose two utility model patent technologies of Guo Wenli's "a kind of plant cultivation nutrition block" and Shandong Qingdao Wang Haifeng's "peat seedling cultivation nutrition block". disease, acid adjustment, and container in one, easy to operate, but poor water retention performance, not suitable for application in saline-alkali land

Images