How to prevent the rotten seeds of spring peanuts after sowing

Rotten seeds often occur before emergence of spring peanuts after sowing, and the serious rate of rotten seeds is as high as 20%, resulting in varying degrees of lack of seedlings and broken ridges. Causes of rotten seeds: poor seed quality or improper storage, long storage period; low-lying terrain, heavy soil viscosity, poor texture, high soil water content, long seedling emergence time; unsolid soil preparation, affecting seed water absorption, weak seedlings; seeds are not selected, uneven size, sowing is not fine or different depth, resulting in uneven emergence or lack of seedling broken ridges; continuous cropping for many years, serious diseases in seedling stage, resulting in lack of seedlings and broken ridges The application of undermature organic fertilizer or too high fertilization concentration will cause fertilizer damage and affect seedling emergence; low temperature for a long time, resulting in slow germination and rotten seeds. Prevention and control methods: (1) fine seed selection. Select new peanut seeds, harvest the remaining peanuts in time and dry them in time, so as to store them scientifically. Drying seeds with skin before sowing can speed up peanut metabolism, enhance seed penetration and improve seed water absorption. 1-3 days before sowing, the seeds without damage and radicle germination were selected and sown. (2) seed dressing with chemicals. Seed dressing with 50% methyl carbendazim or 50% carbendazim wettable powder of 0.1% seed weight to prevent seedling diseases. It can also be mixed with 50% phoxim EC of 0.2% seed weight to control underground pests and bird and rodent pests. (3) fine sowing. Sow at a depth of 4cm to 6cm and avoid contact with fertilizer. By using plastic film mulching cultivation, the ground temperature can be increased by 2 ℃ ~ 3 ℃. After sowing, seeds germinate and seedlings emerge quickly, and the disease can be reduced.