| The pot experiment was conducted to discover the effect of soil moisture on yield of cucumber and soil microbe in greenhouse. The result showed: (1) The yield of cucumber was the highest (389.65 g/plant) when soil relative moisture was 80%90% at florescent stage and early-fruit stage, 90%100% at fruit stage and 70%80% at late-fruit stage. The next (351.49 g/plant) was the treatment with the soil relative moisture of 90%100% at florescent stage, 80%90% at early-fruit stage, 7080% at fruit stage and 90%100% at late-fruit stage. The yield of cucumber was the lowest (257.54 g/plant) when soil relative moisture is 80%90% at florescent stage, 90%100% at early-fruit stage, 70%80% at fruit stage and 80%90% at late-fruit stage. (2)The number of soil microbe varied among different soil moisture treatments. The number of bacteria in soil was the highest when soil moisture was 80%90% field water capacity at florescent stage, and it was low when soil moisture was 70%80% or 90%100% at florescent stage. The number of bacteria in soil increased when soil moisture was from low to high and decreased when soil moisture was from high to low at early-fruit stage and fruit stage; it increased when soil moisture was from low to high and decreased when soil moisture was stable or from high to middle or from low to middle at early-fruit stage and fruit stage. The number of fungi in soil increased when soil moisture was stable or low and decreased when soil moisture was not stable or high. The number of actinomycete in soil varied little at florescent stage and early-fruit stage; it increased at fruit stage and decreases at late-fruit stage. |