论文部分内容阅读
在蔬菜育苗期间,如果苗床土不够肥沃,秧苗出现脱肥症状(如茎细、叶小、色淡等),应及时进行追肥。具体要求和做法是:追肥时间一般以秧苗出齐、子叶展平后为宜;一天之中,以晴天的上午10~12时为好。追肥方法化肥和有机肥均可作追肥施用。追施化肥,应以氮肥为主,用复合肥更好,可以先撒施后浇水,也可以随水浇施,或者将化肥溶解在水中泼施,化肥用量
During the vegetable nursery, if the seedbed soil is not fertile, seedling symptoms of abortion (such as thin stems, leaves small, pale, etc.) should be promptly topdressing. Specific requirements and practices are: top dressing time to seedlings generally Qi, cotyledons flattening appropriate; one day to sunny morning 10 to 12 o’clock as well. Top-dressing methods Fertilizer and organic fertilizer can be applied top-dressing. Topdressing chemical fertilizers should be nitrogen-based, better with compound fertilizer, can be spread after the first watering, watering facilities can also be applied, or the chemical fertilizer dissolved in the water pour Shi, fertilizer dosage