Studies On The Growth,Yield And Quality Of Tobacco By Using Different Percentage Of Organic And Chemic Fertilizer

Chemic fertilizer is slathered in the tobacco production nowadays. As fertilizer can't be holden in soil for a long time, the rate of efficient fertilizer is low. It can't advance tobacco's quality to increase the quantity of fertilizer, but make a large waste and havoc the soil. However, the organic fertilizer is cheaper, longer-hold and using higher than chemic fertilizer, while it can improve the physical and chemic character of the soil. Because it can give balanced plant food to tobacco, the organic fertilizer can improve the intrinsic quality of tobacco and increase the worth of tobacco.In this test, two varieties were studied as the main factor and the rate of organic fertilizer were studied as the ancillary factor. The rate of organic fertilizer is divided into five level, 0%～40%. The agriculture character,physiological character,economic character,the quality of tobacco and fertility of soil after harvest were studied. The results showed that:1. Organic fertilizer can improve the agriculture character of tobacco. The best level is 10%～20%.2. Organic fertilizer can increase the dry matter of tobacco. The effect is best when the rate of organic fertilizer is 10%～20%. The growth of tobacco will become slow when the rate turn too high.3. Organic fertilizer will play down the content of chlorophyll during fast growing stage and heighten it during the maturity stage. Organic fertilizer will heighten the net photosynthesis during the maturity stage.4. Organic fertilizer will improve the yield, production value, rate of upper-class leaf,and average value.5. Organic fertilizer can improve the status of soil, and keep its fertility.