Effects of Ridge Side Cultivation on Maize Physiological Characteristics,Growth and Development in Sloping Farmland
Ridge side cultivation(RSC)of maize,a kind of conservation tillage method in sloping farmland,has been practiced for years in the mountain regions of Northeast China.In order to clarify the influencing machanism of RSC on maize growth and development,photosynthetic characteristics,physiological characteristics and yield,a comparative experiment of maize RSC(T1)and conventional cultivation(CK)was carried out for two years in sloping farmland of eastern mountainous area of Jilin province.The results showed that compared with CK,T1 could significantly increase net photosynthetic rate,stomatal conductance and transpiration rate at maize V12 and VT stages.T1 had significant negative impacts on peroxidase,catalase,nitrate reductase and PEP carboxylase,and hadn't significant impact on superoxide dismutase,glutamine synthetase and RuBP carboxylase at jointing(V8)stage,and hadn't significant impacts on maize carbon metabolic enzyme,nitrogen metabolic enzyme and leaf protect enzyme at V12 and VT stages.T1 didn't had significant impact on dry matter accumulation(DM)at V8 and V12 stages,whereas DM was significant higher in T1 treatment than CK at VT stage.T1 had significant negative impact on maize root bleeding in V8,whereas it had significant positive impacts at V12 and VT stages.T1 didn't have significant impact on leaf area.T1 could lower the plant height and ear height significantly,and increase number of maize grains per ear,100-grain weight and yields.The findings showed that RSC could boost maize output and has significant impacts on photosynthetic and physiological traits as well as growth and development in maize.
MaizePhysiological characteristicsRidge side cultivationSloping farmlandGrowth and development
NETL
NSTL
万方数据
