Key technologies and results of zero growth of chemical fertilizers in Luliang County, Yunnan

In accordance with the relevant requirements of the central, provincial, and municipal governments, Luliang County has fully implemented the zero-growth action for the use of chemical fertilizers for major crops.
The key technical measures and results adopted are as follows: 1.
Promoting soil testing and formula fertilization technology In 2016, Luliang County promoted soil testing The application area of ​​formula fertilization technology is 613,000 acres, and a total area of ​​255,000 acres of formula fertilizers has been promoted, and various special-purpose fertilizers such as 16:9:10, 13:5:7, 13:7:5, and 13:12:10 have been promoted.
18,000 tons of formula fertilizers, an increase of 8.
466 million grains, an average cost and efficiency increase of 158.
3 yuan per mu, a total of 40.
366 million yuan in cost savings and an increase in revenue, and a total saving of 480 tons of chemical fertilizers (equivalent to pure).
2.
Promoting the technology of returning straw to the field In 2016, the rate of returning crop straw and nutrient to the field reached 25.
3%, and the basic fertility of arable land increased by 0.
06 grade.
3.
Carrying out demonstration planting of green manure In 2016, the county planted 150,000 mu of green manure for autumn and winter, and the soil organic matter content increased by 0.
1%.
4.
Promote winter potato drip irrigation technology under plastic film In 2016, promote winter potato drip irrigation technology under plastic film to 20,300 mu, increase nitrogen fertilizer utilization rate by 5-10%, and reduce nitrogen fertilizer consumption by more than 20% per mu.
At the same time, it can reduce agricultural non-point source pollution, protect the agricultural ecological environment, and improve the hygienic quality of potatoes.
It is a green technology.
5.
Promote precise quantitative rice cultivation technology In 2016, promote 60,000 mu of rice precise quantitative cultivation technology, increase rice yield by 5-8% per mu, reduce nitrogen fertilizer consumption by more than 20% per mu, and reduce pesticide control 1-2 times.
At the same time, the pollution of soil, air and water bodies in rice production has been greatly reduced, and the agricultural ecological environment has been effectively protected.
6.
Demonstration of rice light-simplified green production-increasing and efficiency-increasing model research In 2016, demonstration and promotion of rice light-simplified green production-increasing and efficiency-increasing model of “machine transplanting + controlled-release fertilizer + rice field shallow rotary tillage + precise quantitative cultivation” as the main focus of the demonstration piece 3000 mu.
Through the statistical analysis of the actual production and field survey data collected by experts, the demonstration of this technology has increased the yield of rice by 31.
73 kg per mu, an increase of 4.
3%, and the new output value of 95.
2 yuan; the cost of chemical fertilizers and pesticides has been saved by 58.
5 yuan per mu.