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我国华北、西北等地受季风气候影响,春季干旱、风大,土壤化冻晚,加之处于农忙季节,人力和物力等都比较紧张,这些对造林都是限制因子。对整个自治区来说,如果在一年中只依靠春季造林,就很难完成全年的造林任务。然而,雨季降水充分,空气湿度大,气温和地温较高,有利于种子和苗木发芽生长。雨季造林(又称夏季造林)是加快我区绿化步伐的重要措施。近年来,松、柏等针叶树在雨季植苗造林成功
In North China and Northwest China, the climate is affected by the monsoon climate. Spring drought, windy weather and soil freezing night, combined with the shortage of manpower and material resources in the busy season, are the limiting factors for afforestation. For the entire autonomous region, if the reforestation is only relied on in the spring, it will be very hard to accomplish the annual afforestation task. However, full precipitation in the rainy season, air humidity, temperature and ground temperature is higher, is conducive to seed and seedling germination and growth. Rainy season afforestation (also known as summer afforestation) is an important measure to speed up the pace of afforestation in our area. In recent years, pine, cypress and other conifers planted in the rainy season afforestation success