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湿地松育苗,除播种时应认真注意鸟害、鼠害外,主要是把好防病、防虫和施肥淋水三关。湿地松幼苗阶段,病害主要是立枯病,以顶腐型和猝倒型较为普遍。幼苗出土定根后4-5天,即可喷0.15%的波尔多液,进行防治。以后,每星期或半个月喷1次。1964年我们采用此法防治立枯病,效果较好。害虫主要有大蟋蟀、蝼蛄和草鸡(小蟋蟀的一种),常见咬断苗的幼茎。防治方法,可取用药液灌洞和直接挖取等。我们用1:150的滴滴涕兑水药液灌注,效果较好。淋水施肥。除经常注意淋水外,并根据不同苗龄,施用不同浓度的追肥。一般在出土后
Slash pine seedlings, in addition to sowing should pay careful attention to birds, rodents, the main is to prevent disease, pest and fertilizer three times. Slash pine seedling stage, the disease is mainly blight, with top-rot and cataplexy is more common. Seedlings 4-5 days after rooting unearthed, you can spray 0.15% Bordeaux mixture for prevention and treatment. After that, spray once a week or half a month. In 1964 we use this method to control the blight, the effect is better. Pests mainly have big crickets, catfish and grass chicken (a small cricket), common bite seedling young stems. Prevention methods, it is advisable to use liquid irrigation holes and direct digging. We use 1: 150 DDT watered liquid perfusion, the effect is better. Watering fertilizer. In addition to regular attention to watering, and according to different ages, the application of different concentrations of dressing. After the general excavated