During the spring plowing season, in the face of the severe drought in Heilongjiang Province, an important commodity grain base in China, experts in irrigation and water conservancy suggested that the crops and planting methods must be based on the actual situation of water resources. There is no guarantee that areas with spring water can be watered. Change drought."
Zhang Zhongxue, the leader of the National 863 Plan for Water Saving Agriculture and the professor of Northeast Agricultural University, accepted an interview with the Xinhua News Agency. He said frankly that in the face of this year's severe drought, farmers in the dry areas have accumulated traditional drought-resistant experience over the years with high labor intensity and low drought resistance. Severe challenges.
According to Professor Zhang Zhongxue, Heilongjiang Province has generally low rainfall in recent years. Reservoirs in reservoirs and ponds around the country have low water storage capacity. Some of them are even close to dead storage capacity. In addition, there are few water source projects in the field, and drought-resistant water, especially paddy fields, is very tense. Therefore, we must bring river water into the fields as much as possible during the Lingshao period, and make full use of river water.
At the same time, in order to increase the efficiency of water resources utilization, the traditional method of flood irrigation should be eliminated as soon as possible. Zhang Zhongxue revealed to reporters that relevant experiments have proved that the water supply during rice sowing and emergence is the most critical. The supply of water in these two phases can keep up, which will play a decisive role in production. It is understood that at present, the average irrigation water volume of rice in Heilongjiang Province ranges from 700 cubic meters to 1,000 cubic meters, and after the promotion of “controlling irrigation technology,†irrigation water consumption per mu is expected to be reduced to 400 cubic meters.
Zhang Zhongxue suggested that areas that cannot use groundwater and river water, for example, there is no water storage, water diversion facilities, and no opportunity to hit machine wells, to avoid missing out in the spring should be promptly "drought of water to drought," and put an end to abandoning farming and reclamation. Since paddy rice is a high-yield and stable-yielding crop, and soybeans, corn and other crops are relatively low-yielding, and the market price is vulnerable to imports, rice paddy fields may be reduced in production and income in the coming year after selecting other crops. "The 'water changed to drought' must be prudent, and it must not destroy the existing water infrastructure in the field. It can be changed back to the paddy field when circumstances permit in the coming year," Zhang Zhongxue said.
Zhang Zhongxue, the leader of the National 863 Plan for Water Saving Agriculture and the professor of Northeast Agricultural University, accepted an interview with the Xinhua News Agency. He said frankly that in the face of this year's severe drought, farmers in the dry areas have accumulated traditional drought-resistant experience over the years with high labor intensity and low drought resistance. Severe challenges.
According to Professor Zhang Zhongxue, Heilongjiang Province has generally low rainfall in recent years. Reservoirs in reservoirs and ponds around the country have low water storage capacity. Some of them are even close to dead storage capacity. In addition, there are few water source projects in the field, and drought-resistant water, especially paddy fields, is very tense. Therefore, we must bring river water into the fields as much as possible during the Lingshao period, and make full use of river water.
At the same time, in order to increase the efficiency of water resources utilization, the traditional method of flood irrigation should be eliminated as soon as possible. Zhang Zhongxue revealed to reporters that relevant experiments have proved that the water supply during rice sowing and emergence is the most critical. The supply of water in these two phases can keep up, which will play a decisive role in production. It is understood that at present, the average irrigation water volume of rice in Heilongjiang Province ranges from 700 cubic meters to 1,000 cubic meters, and after the promotion of “controlling irrigation technology,†irrigation water consumption per mu is expected to be reduced to 400 cubic meters.
Zhang Zhongxue suggested that areas that cannot use groundwater and river water, for example, there is no water storage, water diversion facilities, and no opportunity to hit machine wells, to avoid missing out in the spring should be promptly "drought of water to drought," and put an end to abandoning farming and reclamation. Since paddy rice is a high-yield and stable-yielding crop, and soybeans, corn and other crops are relatively low-yielding, and the market price is vulnerable to imports, rice paddy fields may be reduced in production and income in the coming year after selecting other crops. "The 'water changed to drought' must be prudent, and it must not destroy the existing water infrastructure in the field. It can be changed back to the paddy field when circumstances permit in the coming year," Zhang Zhongxue said.
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