Basic Study On Water-saving And High Yield Cultivation Physiology Of Spring Maize By Agronomy Adjust

Arid and half arid area often suffer the drought which has the seasonal characteristic or difficult anticipated, its result can have the serious influence to the agricultural production. Therefore, how to enhance arid and half arid area crops output and Water using efficiency has the important practical significance. This experiment has studied the influence to the corn growth, the photosynthesis, combats drought the target and the output, as well as corn field moisture content tendency and moisture content use situation, through the lines on the film mulching, the lines between film mulching and no film mulching three different film mulching ways and the different irrigation number of times in the different growth stages. The result indicated that under the different film mulching ways and different irrigation times condition the performance of the Maize Leaf Area Index, Plant Height, Dry Matter Weight of Per Plant, the Chlorophyll Content, the Photosynthesizes Speed, the Transpiration Speed, the Change of Pores Conductance is: irrigation 2ï¹¥irrigation 1ï¹¥no irrigate, the lines between film mulchingï¹¥the lines on the film mulchingï¹¥no film mulching; At the same time, fills two times of water and the lines between film mulching treatment has the highest Chlorophyll Content, and has the biggest contribution to Photosynthesis, then is also big to the output influence. The change tendency of the Maize Leaf Blade Conductivity, the Soluble Sugar Content and the Proline Content is: no irrigationï¹¥irrigation 1ï¹¥irrigation 2 , no film mulchingï¹¥the lines on the film mulchingï¹¥the lines between film mulching.Maize's water consumption rule performance for the birth earlier period few, the intermediate stage are spring many, the later period slightly few changes tendency. The soil moisture use efficiency is irrigation 2ï¹¥irrigation 1ï¹¥no irrigate, the lines between film mulchingï¹¥the lines on the film mulchingï¹¥no film mulching. The lines between film mulching and irrigation 2 treatments has the highest maize output, but water use efficiency is below to the lines between film mulching and irrigation 1 water treatment; the lines between film mulching and irrigation 1 water treatment's effect of saving water and increasing production is obvious, each millimeter water grain output production increase production 13.81% than no film mulching and increases production 4.93% than the lines on the film mulching.