1) Strengthen soil and fertilizer monitoring. There are 38 provincial, municipal and county (city) cultivated land quality monitoring points in Zhangjiagang City. It has played a great role in accumulating cultivated land quality information, guiding farmers to apply fertilizer scientifically and reasonably, and improving soil fertility. In the future, we should continue to strengthen soil and fertilizer monitoring, broaden the monitoring content and scope, and improve service quality and methods.
2) Investigate and rectify the chemical fertilizer market. In addition to investigating the sales performance of chemical fertilizers in all chemical fertilizer operating points in the city, it is necessary to strengthen the supervision of the chemical fertilizer market in the city. It is necessary to continue to organize quality sampling inspection of fertilizer market before summer sowing and autumn sowing every year, and organize quality sampling inspection irregularly at ordinary times, severely crack down on fake and shoddy fertilizers, prevent the occurrence of incidents that hurt farmers and safeguard their legitimate rights and interests.
2. Promote balanced fertilization technology.
1) Deepen the popularization of soil testing and formula fertilization technology. According to the technical parameters of formula fertilization by soil testing in recent years, cultivated land resource management information system and expert system of formula fertilization by soil testing were established, providing fertilization formulas in different regions, issuing fertilization suggestion cards, vigorously popularizing formula fertilization by soil testing, promoting the coordinated supply of nitrogen, phosphorus and potassium, improving the comprehensive utilization rate of nitrogen, phosphorus and potassium by rice, reducing fertilizer loss, saving agricultural costs and reducing water pollution.
2) due to the timely supplementation of medium and micronutrients. It is suggested that silicon fertilizer and zinc fertilizer should be popularized in a large area of rice in the whole city, and foliar fertilizer containing a variety of medium and trace elements should be vigorously popularized to supplement the medium and trace elements needed by rice in time to promote the stable growth of rice.
3. Control the amount of common chemical fertilizer and increase the amount of organic fertilizer.
Popularizing straw returning technology has the advantages of high crude fiber content, high carbon-nitrogen ratio and high humification coefficient, which is beneficial to the accumulation of soil organic matter, improving soil physical and chemical properties and improving soil fertility. At the same time, straw itself is rich in nutrients, so returning straw to field has become the main measure to improve soil organic matter at present. Replacing part of chemical fertilizer with organic fertilizer can improve the yield better.