SF factory is focus on quality and company's image. We win market with good quality and service. The company has already passed International Quality Management System ISO9001:2008 certification for many years and also got the CE certificate, smoothly got the title of High and New Tech Enterprises.
And has more than ten own intellectual property rights and patent technology. We have own import and export right. Our products exported to Russia, South Asia, South east Asia, Middle East, South America, Africa, Australia, Eastern Europe etc.
CNC Professional machine for Steel coil.
Products Mainly including:
Steel coil recoiler.
Steel coil uncoiler;
Steel coil uncoiler and shearing machine
Steel coil uncoiler and slitting machine;
Plate Punching Machine;
Plate Drilling Mchine;
Shandong SF CNC Machinery Co., Ltd. is a grand manufacturer of
Transmission tower machines in china. With 23 years` experience in this line, we are committed to
producing only the finest products to our customers.
In 2019, we appointed Jinan JUFU International
Co.,ltd to specially export our machines to abroad markets. And now we have a
special engineer team for oversea market, and we are able to offer customer
timely service.
Steel Punch Machine,Steel Plate Machine,Steel Coil Slitter Machine,Steel Plate Drilling Machine Shandong EN FIN CNC Machinery Co., Ltd , https://www.sdfincnc.com
1 Materials and methods
1.1 Test crops and control objects test crop rice; control objects for three generations of vertical leafhoppers.
1.2 Test Overview The test was conducted at the Zhangye Rice Base in Xishan District. During the test period (July 26--29, 2003), the weather was fine and the average temperature was higher than 38 °C.
1.3 experimental design (1) with 55% killing - Su 50g ten insecticidal single 75g; (2) using 55% killing Su 100g; (3) using insecticide single 100g; (4) using Ke Yining 80g + insecticidal single 60g; (5) using BT100g ten insecticidal single 75g; (6) CK1 and above treatment with each grain of Qujingning 250ml plus high efficiency big power 20g, 50kg spray control. The test was carried out at 5 pm on July 26, 2003, and the amount of liquid sprayed per mu was 50 kg.
1.4 Investigation time and method 3 days after application, 4 points of each treatment, 5 points per point, total 20 points, calculate the number of leaves and residual live insects, compare with the control area, calculate the leaf loss rate and prevention effect.
2 test results
55% of the killing of Su·50g+ insecticidal single 75g, 55% killing · Su 100g, insecticidal single 100g, Kejinging 80g ten insecticidal single 60g, BT 100g + insecticidal single 75g each treatment after 3d on rice vertical volume Ye Wei has good control effect, and the average insecticidal effects are 95.73%, 90%, 95.42%, 86.46%, and 90.31%, respectively (see table). After the drug was observed, the rice leaves grew normally.
3 Summary and evaluation
3.1 55% killing·Su and other agents have good effects in controlling rice leaf roller, and the control effect is above 86%;
3.2 It is recommended in production that the above formulas can be used reasonably;
3.3 Each treatment is safe for rice leaves.
From:Shanghai Agricultural Network
Preliminary study on the efficacy test of biological pesticides against rice leaf roller
Due to the increase in resistance of rice pests, we have selected several high-efficiency, low-toxic biological pesticides and other agents for field efficacy tests to further screen the drugs, verify the effectiveness of each agent, and provide a basis for field pest control.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】