Method for improving saline-alkali dry land through enhanced desulfurized gypsum

• Main Authors: ZHUO YUQUN, ZHAO YONGGAN, LI YAN, WANG SHUJUAN, XU LIZHEN
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2021
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES ORIMPLEMENTS, IN GENERAL; SOIL WORKING IN AGRICULTURE OR FORESTRY; TRAPPING

The invention discloses a method for improving saline-alkali dry land through enhanced desulfurized gypsum. The method for improving the saline-alkali dry land through the enhanced desulfurized gypsum comprises the following steps: S1, the desulfurized gypsum is applied near root systems of crops to be planted in the saline-alkali dry land to be improved; S2, drip irrigation belts are laid on the land treated in the step S1; drippers of the drip irrigation belts are positioned right above the desulfurized gypsum; and S3, seeds are sown on the land treated in the step S2; after sowing is finished, salt ions replaced by the desulfurized gypsum are leached through drip irrigation in the crop growth process, and efficient improvement of the saline-alkali dry land is achieved. During drip irrigation, calcium ions in the desulfurized gypsum can be gradually dissolved out and gradually spread along with migration of soil moisture, calcium ion channels are formed in the horizontal direction and the vertical direction