Bac Irrigation Company Limited uses spring irrigation to save water for summer-autumn crops

(Baonghean.vn) -With the task of irrigating over 29,000 hectares of spring rice in four key districts of Yen Thanh, Dien Chau, Do Luong, and Quynh Luu, Bac Irrigation Company Limited has solutions to ensure irrigation water for the spring crop and save water for the summer-autumn crop.

Ensure spring irrigation

Mr. Phan The Trung - Chairman of Nam Thanh Commune People's Committee, said: This spring crop, Nam Thanh has restructured nearly 300 hectares of rice, the main water source is taken from canal N4. This canal serves the communes of Nam Thanh, Khanh Thanh, Long Thanh, due to the strict management of the Northern Irrigation Company Limited, so there is no competition among the communes. The amount of water delivered to the commune, the irrigation teams of the hamlets have all done a good job of distributing water to ensure water reaches the rice fields across the fields.

Mr. Nguyen Cong Kien - Director of Yen Thanh Enterprise, said: The Enterprise is assigned to irrigate 9,3336.7 hectares, of which the dam lake area is 1,314.7 hectares, the pumping station is 367.8 hectares. The current difficulty is that some dam lakes have low water levels, many canals have not been invested so water is still lost, not to mention many irrigation works are still encroached by many households, obstructing the flow... Since the beginning of the season, the Enterprise has focused on dredging weak level I and II canals that are often silted. Maintaining the pumping station system. The Enterprise has 5 clusters and irrigation stations, all staff and employees are based at the base to operate and regulate water according to the water use plan to ensure water for irrigation for spring crops.

According to Mr. Le Cuong - Deputy Director of Bac Irrigation LLC, to complete the task of irrigating over 29,000 hectares of spring rice, the Company first implemented the following measures: From the beginning of the crop, the Company coordinated with localities to focus on dredging canals of the main Do Luong canal, the main Van Trang canal, inter-commune canals... the volume of dredging over 200,000 m3 of mud and soil. In particular, the Company is organizing the use of mud dredgers to clear the entrance channel of the main Do Luong canal and the main canal section from K0 to K1+450, the section of the canal that is often silted with mud and sand, obstructing the flow. Up to this point, the mud dredgers have dredged over 20,000 m3 of mud and sand. It is expected that by early May 1, 2013, the dredging of the silted sections of over 35,000 m3 of mud and sand will be completed in time to provide irrigation water for the spring crop. The total cost of dredging mud and sand is over 7 billion VND. In water regulation operation, build a water distribution schedule on all irrigation channels, thoroughly implement the reasonable rotation irrigation method on irrigation systems. Manage and operate the drainage system, in accordance with the process of preventing saltwater intrusion to ensure fresh water for production.

And save water for summer-autumn crops

Mr. Le Cuong added: The rainfall in 2012 was not very large, only reaching 1,400mm, so the 17 reservoirs managed by the Company have not reached their design capacity. For example, Ve Vung Lake (Yen Thanh) only reached an elevation of 27.82, Ba Tuy Lake 23.51, Vuc Mau Lake 20.8... If scientific irrigation is not used for the spring crop, the area of ​​more than 6,000 hectares of the summer-autumn crop in the dam reservoir area will lack water. Therefore, the Company has solutions: Practice water conservation right from the beginning of the crop, take advantage of the surface water to prepare the spring rice field, use field pumps to pump water from the return sources in dead-end rivers and streams to irrigate rice, only when absolutely necessary, open the reservoir to serve water.

Mr. Bui Van Hao - Director of Quynh Luu Irrigation Enterprise added: The Enterprise manages 6 large and small dams such as Khe Bung, Doi Tuong, Ba Tuy, especially Vuc Mau Lake with a reserve of over 75 million m3 of water for irrigating 1,600 hectares of rice. This year, Vuc Mau Lake has reduced about 5 million m3 of water compared to the design. To save water for the summer-autumn crop, the Enterprise has a solution of using more than 10 oil pumps and electric pumps to pump water from the self-flowing areas of canals N17, N13, N19 to the irrigation area of ​​Vuc Mau Lake of nearly 200 hectares for the winter-spring crop in the communes of Quynh Hoa, Quynh Van, Quynh Thach. Applying scientific irrigation methods such as "watering from high places first, watering from low places later", applying short-term and long-term water schedules suitable for the weather and the rice growth stage. In addition, for the dam lake area, Bac Irrigation Company Limited implements the "shallow, exposed, and dried" irrigation method, which means that in the past, people mainly irrigated in a beam, the water level on the field surface was always 4-5 cm. Now, irrigation is done in batches, "exposed" means irrigating the field surface to expose it to create humus in the soil, which is an effective way to save water. The company also prepared nearly 30 field oil pumps to pump water from the self-flowing area to support the lake area at the main canal tail of Quan Hai (92 ha), the main canal tail of Ve Vung lake (42 ha), the N4 canal tail (14 ha), the N6 canal tail (26 ha)... To reserve water in the lake bed to irrigate the summer-autumn crop. The N20 canal tail irrigates 45 ha in the irrigation area of ​​Dien My Cooperative (Dien Chau), the N22 A canal tail irrigates 33 ha in Hoang Phu-Hoang Tien. The inter-lake cluster has 207 hectares. The pumping company supports 103 hectares of water source by returning water from dead-end rivers to irrigate the Tan Thanh and Nam Lam Cooperatives (Yen Thanh). To avoid loss, the company has just completed consolidating 62 km of Vuc Mau reservoir canal worth 40 billion VND. In 2012 alone, the company has consolidating 16 canals (weak sections mainly dam canals) worth over 16 billion VND.

Van Truong