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1.适当遮阴 对于耐荫树种和花卉及播种期过迟的苗木,在生长初期要采用降温措施,减轻高温热害的不利影响,如搭荫棚等,有条件的可采用遮阳网,避免日灼危害苗木。 1. appropriate shade for shade tolerant trees and flowers and late sowing time seedlings, in the early growing period, the cooling measures should be adopted to reduce the adverse effects of heat damage at high temperature, such as shading and so on, and the sunburn net can be used to avoid sunburn harm to the seedlings. 2.适时松土除草 在每次降雨或灌溉后要进行松土除草。松土宜浅,保持表土疏松,以利于苗木生长。除草宜“除早、除小、除了 ”,撒播苗不便除草和松土,可将苗间杂草拔掉,再在苗床上撒盖一层细土,防止露根透风。松土要逐次加深,但要注意不伤苗、不压苗。 2. timely loosen the soil to remove weeds. After every rainfall or irrigation, loosen the soil and weed. Loose soil should be shallow to keep the surface soil loose, so as to facilitate seedling growth. Weeding should be "early, except for small, except", the sowing seedlings are inconvenient for weeding and pine soil, and the weeds can be pulled out between the seedlings and then a layer of fine soil is covered on the seedbed to prevent the rooting from the wind. The soil should be deepened one by one. 3.防涝 做床的地块如果比较低洼,在雨季到来之前,应提前挖好排水沟渠,及时排水。在夏季干旱的情况下,灌溉是培育壮苗的重要措施,天气干旱时要注意淋水,保证苗床湿润。 3. if the plot of waterlogging prevention is low, the drainage ditches should be dug up ahead of time before the rainy season. In the summer drought, irrigation is an important measure to cultivate strong seedlings. When droughts in the weather, we should pay attention to sprinkling water to ensure that the seedbed is moist. 4.间苗 对过于密集、生长不良、发育不健全、受伤和有病虫害的苗木,以及影响周围多数苗木生长的“霸王苗”要及时间除。对阔叶树的扦插苗,要及时摘芽、除蘖。 The 4. thinning seedlings are too dense, poor growth, undeveloped, injured and infected seedlings, as well as the "rewang Miao", which affects the growth of most of the seedlings around them. The cuttings of broadleaf trees should be sprouts and tillers in time. 5.合理追肥:苗床施肥一般采用速效肥或腐熟的人粪尿。苗圃中常见的速效肥有草木灰、硫酸铵、尿素、过磷酸钙等。施肥次数宜多而每次用量宜少。一般苗木生长期可追肥2至6次。第一次宜在幼苗出土后1个月左右,以后每隔10天左右追肥1次,最后一次追肥时间要在苗木停止生长前1个月进行。对于针叶树种,在苗木封顶前30天左右,应停止追施氮肥。追肥要按照“由稀到浓、少量多次、适时适量、分期巧施”的原则进行。 5. reasonable topdressing: generally, quick fertilization or manure should be used in seedbed fertilization. The common available fertilizers in nursery include ash, ammonium sulfate, urea and calcium superphosphate. The number of fertilized times is suitable and the dosage should be less. Generally, the seedlings can be fertilized from 2 to 6 times during the growth period. The first time should be about 1 months after the seedlings were unearthed, then 1 times every 10 days, and the last time should be 1 months before the seedlings stopped growing. For conifer species, nitrogen fertilizer should be stopped for 30 days before the top of seedlings. Top dressing should be carried out in accordance with the principle of "dilute to dense, multiple times, timely and appropriate, and phased and skillfully applied".
关键字:苗木 花卉