1, the seed quality is low: the purchase of fake seeds or seeds of relatively low quality, the germination rate is relatively low, easy to cause poor emergence.
2, low temperature or rain: Experiments have shown that low ground temperature will reduce the germination rate and germination potential of the seeds. Too much rain will hinder the normal breathing of the seeds, and it will easily cause the seeds to be attacked by mold and cause rotten species.
3. Drought: The soil moisture content is low at the time of sowing, which cannot meet the needs of seed emergence and cause dry shoots.
4, extensive land preparation or improper use of fertilizer: å· å¤š more, more 茬 墒, uneven lyrical or different shades when planting, will affect the normal germination of seeds. Excessive fertilization at the time of sowing, uneven, manure is not completely decomposed, or seeds directly contact with fertilizer, will burn the seedlings.
5. Planter problem: The planter is careless and unfamiliar with the operation of the planter, resulting in a leaking phenomenon.
6. Underground pest damage: The most serious damage is the tiger, the golden worm, the cockroach, etc., which bite off the young buds and cause the seedlings to be broken.
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