Method for planting poplar trees in coastal saline-alkali soil

A technology of poplar in saline-alkali land, applied in the field of poplar planting in coastal saline-alkali land, can solve the problems of affecting the ecological effect and investment benefits of greening landscape, being susceptible to diseases and insect pests, poor growth potential and other problems, achieving good ecological effect of greening landscape, low implementation cost, The effect of fewer pests and diseases

Inactive Publication Date: 2011-08-17
TIANJIN SEASHORE SALINE ALKALI SOIL BIOLOGICAL PLANTING ENG
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AI Technical Summary

Problems solved by technology

Conventional poplar planting technology usually shows that the survival rate of poplar planting is low, and even if it survives, it grows slowly and has poor growth potenti

Method used

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with specific examples.

[0013] Take the poplar planting implemented in Tianjin Binhai area as an example.

[0014] The content of organic matter in 1m2 of coastal saline-alkali soil in Tianjin is generally about 0.8%, the salt content is generally above 1.0%, and the buried depth of groundwater table is relatively shallow, ranging from 0.5m to 1.5m. The texture is mainly clay loamy soil, and the permeability coefficient is n ×10 -5 cm / s, the terrain is low and flat, and the natural drainage is not smooth.

[0015] (1) Earthwork padding: In areas with low terrain and shallow groundwater levels, earthwork must be filled to elevate the terrain as a whole or in part to control the maximum groundwater level below 1.5m. Earthwork filling can be done by digging drainage ditches to build terraces and strip fields to raise the local terrain, or by transporting soil from outside or blowing and filling the la...

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Abstract

The invention relates to a method for planting poplar trees in coastal saline-alkali soil, which comprises the following steps of: filling earth; digging and processing plant pits; improving earth for refilling the plant pits; selecting quality of tree stock; planting; building a cofferdam; and watering and nursing, wherein in the step of filling the earth, the whole or local terrain is lifted, and the highest underground water level is controlled to be below 1.5m; in the step of digging and processing the plant pits, the plant pits in large specification are dug, and a salt isolating and water pouring layer with the thickness of 0.1 to 0.3m is laid at the bottom of each plant pit; and in the step of improving the earth for refilling the plant pits, the salt content of the earth for refilling the plant pits is less than 0.5 percent, the pH is between 6.5 and 8.5, and the soil is powdery or granular and is mixed with a soil structure improver and an organic fertilizer. The method has the advantages of high operability and low implementation cost, and can effectively prevent the earth in the plant pits from returning salt, being alkalified and accumulating salt. Demonstration application proves that the survival rate of the planted polar trees is over 95 percent; moreover, the poplar trees grow vigorously and have a few plant diseases and insect pests in a later period, and have good landscape greening ecological effect.

Description

technical field [0001] The invention relates to a method for planting poplars, in particular to a method for planting poplars in coastal saline-alkali land. Background technique [0002] Coastal saline-alkali areas have the characteristics of high soil salinity, short soil formation time, poor nutrients, complex profile layers, and large changes in soil texture and structure; high groundwater level and high salinity; low terrain and poor natural drainage. Conventional poplar planting techniques generally show that the survival rate of poplar planting is low, and even if it survives, it grows slowly and has poor growth potential, and is susceptible to pests and diseases, especially poplar rot, which seriously affects the ecological effect and investment benefits of greening landscapes. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, aiming at the natural environment conditions and soil characteristics...

Claims

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Application Information

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IPC IPC(8): A01G1/00C05G3/04C05G3/80
Inventor 张金龙张清王振宇
Owner TIANJIN SEASHORE SALINE ALKALI SOIL BIOLOGICAL PLANTING ENG
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