Suzhou Newstar Hardware Co.,Ltd is a professional China Socket Tool Set Manufacturer, Socket Set for tool box, hex socket set, Wrench Socket Set, etc. We provide socket set for tool box, tool trolley, Tool Cabinet and simple packaging of sockets with spanners. All tools are qualified for good use, also with very competitive prices. We welcome your visit and wish for a long term cooperation. Socket Tool Set,Impact Socket Set,Socket Set For Tool Box,Hex Socket Set SUZHOU NEWSTAR HARDWARE CO.,LTD. , https://www.hardwarenewstar.com
Lettuce leaf spots show two symptoms: one is water-stained at first, then gradually expands into round to irregular, brown to dark gray lesions; the other is dark brown lesions with irregular edges and outer circumference Watery halo. When wet, the surface is dark gray mold, and in severe cases, the lesions fuse with each other, causing the leaves to become brown and dry. Spread by airflow and rainwater. Usually rainy or foggy weather is favorable for the disease, poor plant growth or partial application of nitrogen fertilizer is too prosperous, will increase the incidence.
Control methods: 1 pay attention to the removal of diseased leaves and diseased bodies, and carry out the field to burn. And spray the generals to protect the trees. 2 clearing the ditch to avoid the partial application of nitrogen fertilizer, timely spraying can make the plant stems thick, the leaves are thick, the leaves are fresh, the plants are flourishing, and the natural taste is strong. At the same time, it can improve the ability to resist disasters, reduce the amount of pesticides and fertilizers, and reduce residual poisons. 3 At the beginning of the onset, spray 40% polysulfide suspension 500 times solution, or 75% chlorothalonil wettable powder 1000 times solution and 70% methyl thiophanate WP 1000 times solution plus new high fat film 600-800 times solution. It is rotated once every 10 to 15 days, and it is continuously controlled 1 or 2 times.
Total 1 | <First <Prev 1 Next> Last> |
share to: