First, a reasonable rotation, it is recommended to rotate with corn, soybeans, etc. for about 2-3 years, which can greatly reduce the residual bacteria in the soil. Before sweet potato planting, it is necessary to deepen the land, apply enough base fertilizer, and fill the bottom of the foot to ensure sufficient nutrient for sweet potato growth.
Second, the selection of excellent disease-resistant varieties, seed potatoes before sowing, soaked in warm water for about 10 minutes to reduce the spread of seed potato bacteria. And seeding agent plus new high-fat membrane seed dressing and then planting the next species, can effectively avoid underground pests and diseases, and isolate virus infection.
Third, strengthen field management, timely weeding and weeding, reduce weeds, and ensure that the sweet potato root block soil is well ventilated. Watering and fertilizing at the right time, balanced application of nitrogen, phosphorus and potassium fertilizers, combined with foliar application of fruit and fruit, can effectively improve the ability of sweet potato to absorb water, increase the expansion of sweet potato and reduce the production of cracked fruit.
The blade of a cutter knife is very sharp, and there are several parallel scribe lines on its blade. Because it is usually used to cut wallpaper, it is also called a "wallpaper cutter". Cutter knife is usually used in the decoration and advertising plaque industry. The biggest feature of the cutter knife is that it can be easy to replace the segmented blades. You can fold off the unsharp section of blade when using it, so the sharpness can be maintained without sharpening the blade frequently.
Cutter knife,Utility knife,plotter knife
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