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Method for planting cotton in coastal heavy saline-alkali land

A saline-alkali land and cotton technology, applied in the field of water resource utilization and soil improvement, can solve problems such as poor salt tolerance, no cotton production, difficult germination and emergence, and achieve the effects of reducing upward migration, lowering groundwater levels, and inhibiting water evaporation

Active Publication Date: 2012-01-04
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

Cotton seeds have poor salt tolerance in germination and seedling stages, and it is difficult to germinate and emerge in coastal heavy saline areas, resulting in no cotton production in this area

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0026] Below is the application example of the applicant planting cotton in heavy saline-alkali land near the sea. The base is located in Haixing County, Hebei Province, which has a warm temperate continental monsoon climate, with an annual average temperature of 12.1°C, an average temperature of -4.6°C in January, an extreme minimum temperature of -19.9°C, and a frost-free period of 217 days. The annual sunshine hours are 2718.8 hours, and the average annual precipitation is 627.9mm, mainly concentrated in July to August, accounting for 74% of the annual precipitation. This area is a coastal plain, low-lying and flat, with an altitude of 1.3-3.6m, and the soil is coastal saline soil with a salt content of more than 0.8%, which is coastal heavy saline-alkali land. The groundwater level is shallow, with an average of about 1 meter, and the groundwater is highly mineralized, with a salt content of 7-20g·L -1 .

[0027] The method for planting cotton in coastal heavy saline-alk...

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PUM

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Abstract

The invention discloses a method for planting cotton in coastal heavy saline-alkali land. The method comprises the following steps of: A, consolidating land, and building a strip field or a platform field; B, irrigating by using saline water in winter and icing; C covering by using a mulching film; D, sowing; E, performing growth period management; and F, picking in time after cotton bolls are fully cracked and opened. In the method, a series of measures such as land consolidation, icy irrigation of saline water in winter, ice melting spraying of saline water in spring, salt inhibition and soil moisture conservation through mulching film coverage and the like are adopted, so that the salt content of soil in cotton root layers is reduced, and the normal growth of the cotton is ensured; and the method is easy to operate and low in cost, can be applied to coastal saline and alkaline areas, and has remarkable economic, social and ecological benefits.

Description

technical field [0001] The invention relates to the technical field of water resource utilization and soil improvement, in particular to a method for planting cotton in coastal heavy saline-alkali land. Background technique [0002] Soil saline-alkali drought is the main factor restricting the development of agriculture. The traditional improvement of saline-alkali land is mainly realized through irrigation and drainage measures such as spraying salt with fresh water, extracting groundwater, and lowering the groundwater table. The application of this measure is limited due to the scarcity of fresh water resources. Especially along the coast of the Bohai Sea, more than 20 million mu of coastal saline-alkali land is difficult to use due to lack of fresh water, and it is difficult for crops to grow. However, although freshwater resources are scarce in coastal areas, saltwater resources are abundant. [0003] Referring to the applicant's previous patent "Method for Improving S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01B79/02
Inventor 刘小京张秀梅谢志霞郭凯陈丽娜
Owner INST OF GENETICS & DEVELOPMENTAL BIOLOGY CHINESE ACAD OF SCI
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