Effect of mulch and shade on physiological and biological characteristics of ginger growing in field

Two years’experiments show that both the mulch with wheat shoot and the shade with corn shoot can improve the soil moisture by about 2.4％～ 4.0％．at the same time decrease the soil temperature by 2.1～3.3C ．Compared with the shade，the mulch with wheat shoot can make the plant stronger and shorter，the shoot and leaf thicker，shoot number and leaf number higher，stomata density lower but stomata aperture bigger，the net photosynthesis-rate and NR activity higher，and yield increase．