What are the methods of fertilization for orchids? the benefit of water-saving irrigation for broccoli planting is high.

Broccoli, commonly known as green cauliflower, is a kind of cauliflower, rich in nutrition, is a popular dish in summer, but also a common variety of urban green pollution-free vegetables. The planting adaptability of broccoli is wider than that of cauliflower, and it is more suitable for broccoli growth in Lanzhou area, which can show the characteristics of good quality, high yield and remarkable economic benefits. The seed collection and retention of broccoli is suitable to be carried out in mild and arid climate areas, and advanced planting measures must be used to ensure the planting quality of broccoli. Water-saving irrigation is an important measure to grow broccoli. Broccoli irrigation is generally accomplished through semi-fixed constant pressure variable frequency water supply irrigation system and bare ground fixed sprinkler irrigation system (including greenhouse fog spraying, drip irrigation, etc.).

The semi-fixed pipeline constant pressure frequency conversion water supply system has the following characteristics:

The main contents are as follows: 1. The operation is convenient, and the frequency conversion technology is adopted to realize the automatic operation of the water supply pumping station, which does not need a special person on duty and saves manpower.

2. Farmers are free to choose suitable irrigation methods for irrigation, which is easy to use.

3. Metering and charging of water to the household

4. Improve the utilization rate of water resources.

5. The investment is lower than that of fixed sprinkler irrigation and drip irrigation. Because the semi-fixed pipeline constant pressure water supply system well meets the irrigation needs of the majority of vegetable farmers.

Advantages of water-saving irrigation technology for broccoli

Due to the shallow root system of vegetables, timely and appropriate sprinkler irrigation can ensure high quality and high yield of crops. Sprinkler irrigation is adopted to avoid waste of irrigation water and loss of water and fertilizer, reduce surface runoff and prevent deep leakage.

Benefits of Water Saving Irrigation Project

1. Social benefits. Sprinkler and micro-irrigation can greatly improve the utilization rate of irrigation water, which can be increased by 40% or more compared with conventional irrigation. The use of conventional irrigation not only makes irrigation water flow away in vain, but also causes the loss of fertilizer and soil.

2. Save labor. According to the statistics of irrigation labor, it takes 49.5 workers / ha for artificial shoulder lifting and small pump flooding irrigation to grow green vegetables under the same conditions. The experimental base irrigated broccoli with sprinkler irrigation, 0.45 workers per hectare. Forty-five workers per hectare are saved, thus saving production costs.

3. Water-saving benefit. In the experimental base, broccoli was planted at the same time and green vegetables were planted under the same conditions. under sprinkler irrigation, the primary sprinkler irrigation of broccoli was 180m / h, while it was flooded with a small water pump with a flow rate of 6m / h, and the amount of irrigation was 270m / h. Compared with sprinkler irrigation, 90m ³water per hectare is more than each time, and sprinkler irrigation saves 33.3% water. And small pump flooding irrigation quality is poor, irrigation water is too late to infiltrate, easy to produce surface runoff, resulting in the loss of water, soil and fertilizer. Broccoli is generally irrigated three times in a season, and sprinkler irrigation can save water up to 270m ³/ h.

Using water-saving irrigation to grow broccoli, the investment per hectare is between 30000 and 37,500 yuan, plus depreciation and maintenance, the cost can be recovered in 3 to 4 years. And the use of water-saving irrigation technology, so that broccoli not only increase yield, but also improve quality, can be sold at a good price so as to increase income and efficiency.

At present, the main body of water-saving irrigation base construction in rural areas is mainly governments at all levels, relatively speaking, the investment of village economy and individual vegetable farmers is relatively less. Therefore, governments at all levels should step up publicity and gradually raise the importance of vegetable farmers' understanding of the sustainable use of water resources, so that the broad masses of vegetable farmers will consciously join in water-saving irrigation, who will benefit from construction and who will increase production by investment. let the baton of water-saving irrigation be passed on effectively.