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Method suitable for intercropping sorgho and sesbania on saline and alkaline land

A technology for sweet sorghum and saline-alkali land, applied in the field of agricultural planting, can solve problems such as unfavorable plant growth, aggravation of saline-alkali land salinization, unreasonable fertilizer composition, etc., and achieve the effects of reducing water evaporation, alleviating soil salt accumulation, and preventing soil return to salt

Inactive Publication Date: 2013-07-31
INST OF GENETICS & DEVELOPMENTAL BIOLOGY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since sweet sorghum needs a lot of fertilizer during its growth, if too much fertilizer is applied and the composition of fertilizer is unreasonable, it will aggravate the salinization of saline-alkali land, which is not conducive to plant growth.

Method used

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  • Method suitable for intercropping sorgho and sesbania on saline and alkaline land
  • Method suitable for intercropping sorgho and sesbania on saline and alkaline land

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Experimental program
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Embodiment

[0034] Taking the intercropping of sweet sorghum and sorghum in the heavy saline-alkali land behind the Xiaoshan Village of Haixing County, Hebei Province by the Chinese Academy of Sciences as an example, the method of planting sorghum and sweet sorghum intercropping in the coastal saline-alkali land is explained.

[0035] The area is flat and close to the Bohai Sea. Fresh water is extremely scarce, and the soil is mostly coastal tidal soil. In spring, the salt content of the 0-30cm soil layer is 0.3%-0.8%, and the soil pH is above 8.3, which is a medium-severe saline-alkali land. Soil organic matter content is low, and nutrients such as N and P are lacking. Waterlogging is prone to occur in July and August in summer.

[0036] After 2 years of planting of sweet sorghum and sesbania in single and intercropping mode, the experimental conditions are shown in the table below

[0037] Table 1 Effects of monocropping and intercropping of sweet sorghum and sesbania on soil nutrients

[00...

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Abstract

The invention relates to a method for intercropping sorgho and sesbania on a saline and alkaline land, and the method comprises the following steps of: A, soil desalting and land preparation: desalting the plowed layer soil of the saline and alkaline land, leveling the land, fertilizing, and seeding; B, intercropping, wherein the intercropping row number ratio of the sorgho and the sesbania is 1:3, namely one row of the sorgho is intercropped with three rows of the sesbania, the row spacing of the sesbania and the sorgho is 25-30 cm, the row spacing of the sesbania is 33-35 cm, and the row spacing of the sorgho is 100-105 cm; C, field management: thinning or filling seedlings when the sorgho has 2-3 leaves and the sesbania has 3-4 leaves, and singling one strain in every hole; and D, harvesting: harvesting the sorgho 7-10 days before grains are mature, reaping stalks and seeds, and reaping the sesbania before the grains are mature and cracked. The method disclosed by the invention promotes the balanced yield increase of the sorgho and the sesbania by utilizing the advantage complementary action of a symbiotic system of the sorgho and the sesbania, reduces the fertilizer addition, effectively remits the nutrient pinch obstruction of the saline and alkaline land, alleviates the secondary salinization of soil and enhances the composite utilization ratio of the land.

Description

Technical field [0001] The invention relates to the field of agricultural planting technology, in particular to a planting technology of intercropping sweet sorghum and sesbania. Background technique [0002] Sesbania is an excellent summer legume green manure and soil-improving crop. It is barren-tolerant, salt-tolerant, strong in nitrogen fixation, and rich in plant nutrients. It has a significant effect of improving soil and increasing yield after pressing. It is called "the pioneer crop for improving saline-alkali soil." The stems and leaves of Sesbania can be used as feed, fuel or raw materials for papermaking and textiles. Sesbania gum extracted from the seeds can be used as a new material for the production of galactomannan gum and a substitute for guar gum. It can also be used as an oil well Water-based fracturing fluids and gelling agents for water-cavity explosives have broad application prospects in the petroleum and mining and metallurgical industries. [0003] Sweet s...

Claims

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Application Information

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IPC IPC(8): A01G1/00
Inventor 杨莉琳刘小京毛任钊徐进谢志霞郭金雨冯新彦穆静
Owner INST OF GENETICS & DEVELOPMENTAL BIOLOGY CHINESE ACAD OF SCI
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