What causes poor corn seedling emergence?
①Low temperature or excessive rain: Experiments show that low-temperature soil reduces the germination rate or germination vigor of seeds; too much rain hinders the normal respiration of seeds and makes them prone to mold infection, causing seed rot. ②Rough land preparation or improper fertilizer application: Many clods, uneven land, uneven soil moisture, or inconsistent sowing depth...
①Low temperature or excessive rain: Experiments show that low-temperature soil reduces the germination rate or germination vigor of seeds; too much rain hinders the normal respiration of seeds and makes them prone to mold infection, causing seed rot.
②Rough land preparation or improper fertilizer application: Many clods, uneven land, uneven soil moisture, or inconsistent sowing depth can all affect the normal germination of seeds. During sowing, too much fertilizer, uneven distribution, or direct contact between seeds and fertilizer can burn the young sprouts.
③Sowing too early in relay intercropping: When relay intercropping in wheat fields is done too early, the symbiotic period between wheat and corn is too long, which easily leads to weak seedlings.
④Seeder problems: Carelessness or unfamiliarity with the seeder causes missed sowing.
⑤Damage from underground pests: Mainly damage from the black cutworm, which bites off young sprouts and causes missing plants and broken rows.
⑥Phytotoxicity: When using chemicals for seed dressing, excessive dosage or uneven dressing causes phytotoxicity.