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 unreasonable fertilizer composition, unfavorable plant growth, aggravating the salinization of saline-alkali land, etc., and achieve the effects of preventing soil salt from returning, reducing water evaporation, and alleviating soil salt accumulation.

Inactive Publication Date: 2015-07-15
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 sweet sorghum implemented by the Chinese Academy of Sciences in the heavily saline-alkali land behind Xiaoshan Village, Haixing County, Hebei Province as an example, the method of intercropping sweet sorghum and sweet sorghum in coastal saline-alkali land is explained.

[0035] The area is flat and borders on the Bohai Sea. Fresh water is scarce, and the soil is mostly coastal fluvo-aquic 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 belongs to medium-severe saline-alkali land. Soil organic matter content is low, and nutrients such as N and P are deficient. Waterlogging disasters are prone to occur in July and August in summer.

[0036] After 2 years of monocropping and intercropping patterns of sweet sorghum and biscuits, the experimental conditions are shown in the table below

[0037] Table 1 Effects of monocropping and intercropping of sweet sorghum and Sel...

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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 technical field of agricultural planting, in particular to a planting technique for intercropping sweet sorghum and field greens. Background technique [0002] Echinacea is an excellent summer leguminous green manure and soil improvement crop. It is resistant to barrenness and salt, has strong nitrogen fixation ability, rich plant nutrient content, and has a significant effect on improving soil and increasing production after overturning. It is called "the pioneer crop for improving saline-alkali land". The stems and leaves of quince can be used as feed, fuel, or raw materials for papermaking and textiles. The quince gum extracted from the seeds can be used as a new material for the production of galactomannan gum and a substitute for guar gum, and can also be used for oil wells Water-based fracturing fluid and gelling agent of water chamber explosives have broad application prospects in petroleum and mining industries. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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