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桔梗乃多年生植物。种植后2-3年采挖。因此,在生产上除施足基肥外还要适时、适量地追肥才能提高产量,但是如果追肥不当,无异于揠苗助长。如何才能提高追肥的有效率呢?通过数十年桔梗生产管理观察,略得一孔之见: 一、桔梗有冬播、春播,无论是冬播还是春播,春季出苗后无需马上追肥,因原基肥足可供应幼苗出土后的生长之需,特别是氮肥,多施促使幼苗徒长(有的会死)嫩长
Campanulaceae is a perennial plant. 2-3 years after planting excavation. Therefore, in addition to production Shizujifei but also timely, appropriate amount of top dressing to increase production, but if the improper dressing, is tantamount to Saplings help. How to improve the efficiency of top dressing? Through decades of observation of Campanulaceae production management, slightly won a hole in opinion: First, Campanulaceae winter sowing, spring sowing, either winter sowing or spring sowing, spring immediately after emergence without the need to immediately topdressing, due to the original base fertilizer adequate supply Seedlings need to grow after the excavated, especially nitrogen fertilizer, and more to promote the growth of young seedlings (some will die) long