不同覆盖物对红松播种苗床土壤特性及育苗效果的影响

为了解不同覆盖物对红松播种苗床土壤日蒸发量、土壤表层温度和种子出苗率及幼苗生长的影响,开展了不同覆盖物红松播种试验.结果 表明:不同覆盖物下土壤日蒸发量由大到小依次为CK、河沙、草炭土、松针、锯末和豆秸;河沙覆盖的土壤表层温度最高,其次是松针覆盖,豆秸覆盖的最低,锯末和草炭土覆盖下的土壤温度两者相差不大;松针、草炭土、...

Effects of Different Mulches on Soil Characteristics and Seedling Raising of Pinus koraiensis Seeding Beds

In order to understand the effects of different mulches on the daily soil evaporation,soil surface temperature,seed emergence rate and seedling growth of Pinus koraiensis seeding beds,a sowing experiment with different mulches was conducted.Result shows that the daily evaporation of soil under different mulches is CK,river sand,grass charcoal soil,pine needles,sawdust,and bean straw,respectively;the surface temperature of the soil covered by river sand is the highest,followed by pine needle coverage,and that of soybean straw.The lowest,the soil temperature under the mulching of sawdust and turf soil is not much different;the mulching of pine needles,turf soil,and soybean straw can significantly improve soil nutrients,while the mulching of sawdust and river sand has little effect on soil nutrients;the temperature under the mulching of river sand and pine needles.The seedling rate of Pinus koraiensis is higher,and the seedlings covered with grass charcoal soil,sawdust and bean straw are lower;the seedlings covered with pine needles have the optimal growth potential,followed by bean straw,and the seedlings covered with grass charcoal soil,sawdust and river sand have poor growth potential.