Technical Efficiency Of Dryland Corn Drought Cultivation Mode Of Yulin City

Maize（Zea mays L.）is one of the most important crops. High grain yield is the firstproduction target pursued by producer. Considering the problem of insufficient waterresources in agricultural production of farmland area and water use efficieney by traditionalcultivation, the studies on the maize yield, agronomic traits, dry matter, leaf area index andsoil moisture, temperature was conducted by different film–covering modes, as well as wholecovering on double ridges and planting in catchment furrows at different stages. The majorresults are as follows.1. The results showed that seeing from different film mulching modes, yield-increasingextent of whole mulching on double ridges was significantly higher than that of half mulchingon double ridges, and half mulching on double ridges was remarkably higher than half flatmulching；seeing from different film mulching times, yield-increasing extent of autumnmulching was much higher than that of sowing mulching. ear length、ear diameter、kernelnumber per row and100-Kernel weight extent of whole film mulching on double ridges wassignificantly higher than that of half mulching on double ridges, and half film mulching ondouble ridges was remarkably higher than half flat mulching；but seeing from different filmmulching modes, no significant difference at row number per ear.2. Mulching can significantly increase water use efficiency, Compared with the wholefilm mulching on double ridges of autumn mulching that higher the whole film mulching ondouble ridges of sowing mulching、the whole film flat mulching of autumn mulching、the halffilm mulching on double ridges and the conventional no mulching cultivation(CK) were﹣0.31、6.51、11.27and20.91kg/(mm.hm~2) respectively, Soil moisture monitoring results showthat the whole film mulching on double ridges of autumn mulching can significantly increasewater use efficiency.3. Ground temperature showed that increase as temperatures rise after sowing, thehighest In last third of the May.4. Each treatment (CK) in the seedling stage and growth stage were significantly aheadof schedule than open field cultivation，In particular, whole mulching on double ridges ofautumn mulching was significantly；Film processing LAI, total leaf area per plant, plantmorphology (plant height, ear height) and dry matter yield per plant at different growth stages faster than the open field cultivation, indicating that mulching promoted the growth of maize.5. whole mulching on double ridges of autumn mulching was is extremely significanteconomic benefits and ecological effects film, early film surface to reduce wind erosion inspring and summer and autumn surface soil erosion, thus protected the ecologicalenvironment effectively.