土壤含水量对日光温室内土壤主要物理特性和小白菜生长的影响

以小白菜品种四月慢为试材，研究了3种土壤水分含量对冬季日光温室内土壤主要物理特性和小白菜生长的影响。结果表明：随着土壤含水量的增加，对土壤三相比产生显著影响|土壤热容量显著增大|土壤导热率和土壤导温率先显著增大，后显著减小。表层5 cm、10 cm和15 cm的地温日变化结果显示：土壤含水量为55 %～70 %的处理地温高于土壤含水量为70 %～85 %、土壤含水量为85 %～100 %的处理|表层15 cm地温日变化中土壤含水量为70 %～85 %的处理日较差最小|当土壤含水量为70 %～85 %时，显著提高了小白菜单株产量、叶绿素和VC含量。

Effects of Soil Moisture Content on Soil Major Physical Traits and Pakchoi Growth in Solar Greenhouse

In this paper,taking pakchoi(Brassica rapa L.chinensis Group.)variety'Siyueman'as experiment material,we studied the effect of 3 different soil moisture contents(with W1,W2,W3 said)on major soil physical trait and pakchoi growth in greenhouse in winter.The results indicated that along with the increase of soil moisture the 3 phases of soil were significantly affected,the soil thermal capacity was also remarkably augmented.The soil thermal conductivity and the rate of soil thermal conductivity were firstly i...