The term “capped seedlings†refers to the fact that the seeds did not leave the seed shells in the soil when they emerged. Instead, the seed shells were excavated with the cotyledons sandwiched together. The seedlings that were unearthed with the seed shells were called “capped seedlingsâ€.
There are many reasons for the appearance of “capped seedlings†in peppers, some of which are sown in shallow or topsoil, some that use poor ripeness and Chen seeds sowing, some are due to sowing dried seeds, and some are due to low ground temperature, resulting in prolonged emergence time And so on, can lead to "with hat seedlings."
"Capped seedlings" are bad seedlings that can cause the cotyledons of the seedlings to fail to stretch properly and reduce the photosynthetic efficiency, thus affecting the early growth of seedlings. The two cotyledons of the "hatted seedlings" are connected to form a ring, which also has a deterrent effect on the normal growth of the true leaves. When a "capped seedling" appears, it is necessary to analyze the reasons and adopt different remedial measures for different situations.
1. The cover soil is too shallow because the requirements of the thickness of the cover soil are not known. The pepper seeds are small, the top soil strength is relatively weak, and the soil is not easy to emerge. The soil should be properly covered with a suitable cover soil thickness of 0.5 to 1 cm. Overlying the soil, the topsoil of the mulberry surface is prone to dehydration and drying, causing the seeds to dry out. Even if it does not dry out, the seed buds are easily excavated against the seed hulls to form a "capped seedling." At the beginning of the exhumation of the seedlings, a layer of moist soil shall be evenly spread on the surface of the seedlings, and the soil shall be uniformly spread to a thickness of 0.5 cm to help the seedlings shell off.
2. If the seeds are capped due to seeding, the seed shells should be gently removed by hand or twigs when the seedlings are freshly emerged.
3. If the seedlings are capped and uncovered due to dry topsoil, the seedlings should be sprinkled with a layer of fine wet soil to help the seeds be shelled, or evenly sprayed once, and then covered with a layer of soil moisture. harden. If necessary, cover the non-woven fabric after sowing, moisturize the crushed grass, and keep the bed soil moist from the seed germination to sprouting.
In addition, in order to avoid the phenomenon of capping seedlings, the bottom water should be soaked before sowing, soaking seed germination and then sowing, because the dry seed seeded seedlings are easy to appear live, new seeds should be sown.
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