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桑树扦插生根是由内因和外因所决定的.外因是一个综合性因素,如水分、土壤温度、大气湿度、光照等,但在这些因素中,水分是主要的因素.这是因为水分在桑树生命活动中起着重要的作用,是不可缺少的因素,如养分摄取和运输、同化作用的进行、细胞膨压的维持以及树体温度的调节等等都离不开水.水分又是植物体内最多的成分,一般桑叶含水量为70～75%,枝条为58～61%,根部54～59%,同时桑树水分消耗量也很大,桑叶在光合作用中制造一克干物质,需水量达274克,在生长期内主要靠桑树根系从土壤中不断吸收大量水分,才能满足生长发育的需要.但是桑树扦插,插穗一经切离母株后,水分的来源就受到限制.硬枝扦插,
Mulberry cutting rooting is determined by the internal and external factors.External factors is a comprehensive factor, such as water, soil temperature, atmospheric humidity, light, but in these factors, water is the main factor.This is because the moisture in mulberry life Activities play an important role, is an indispensable factor, such as nutrient intake and transport, assimilation, the maintenance of cell turbulence and the regulation of the temperature of the tree, etc. are inseparable from the water. Water is the largest plant Composition, the general mulberry leaf water content of 70 to 75%, branches of 58 to 61%, roots 54 to 59%, while mulberry water consumption is also very large, mulberry leaves in the photosynthesis of one gram of dry matter, water demand up to 274 grams, mainly in the growing period by mulberry roots from the soil continue to absorb a large amount of water to meet the needs of growth and development, but the mulberry cuttings, cuttings once cut off from the mother plant, the source of water is limited.Radix cutting,