Effect Of Different Tillage On Growth Of Maize

By field experiments, made traditional farming as a control, take the random block design. Studied the change of soil moisture, temperature, nutrients and other environmental factors and preliminary discussed the impacts on maize growth under6kinds of tillage. Collected and analysised the Jansa spring in no-tillage farmland, no-tillage+straw mulch and the traditional farming farmland The main conclusions are as follows:1. Throughout the growth period, Catchment ridge film mulching treatment has obvious effects of water-keeping, with an increase rainfall in the mid and late, rainwater saving was more pronounced effect. Traditional farming+plastic film mulching treatment and no-tillage+mulching treatment the highest water content in the early growth of corn. In the mid and late, the soil moisture content decreased gradually. Straw mulch are all treatment the role of water. No-tillage corn seedling stage treatment the surface (Ocm-20cm) of soil compaction, water content decreased.2. The change of geothermal (5-25cm) showed previously at seedling stage. All the treatment of traditional farming+plastic film mulching, no-tillage+plastic film mulching and catchment ridge film mulching can improve the soil temperature and it can improve2.6℃,2.0℃and1℃respectively. Other conservation tillage ground temperature is lower than traditional farming, no-tillage+straw mulch treatment is the lowest, was2.1℃lower than that of the traditional; after corn booting stage, the temperature difference in every treatment becamed lower gradually. Although the treatments of no-tillage and straw mulch reduced soil temperature in the seedling stage, in high temperature season, no-tillage and straw mulch played a clear role in cooling the buffer, and the soil daily change tends to ease up, and can effectively alleviate the damage about temperature-induced change on crop.3. Comprehensively scaled from the process of crop growth, plant height, leaf area index, dry matter content and other many indexes, the treatments of catchment ridge film mulching and traditional farming+straw covering had a biger promoted effect on crop groth. The promotion under straw covering showed in the middle and later term of growth period. But the promotion under the traditional farming+plastic film mulching treatment and no-tillage+mulching treatment showed in the early stage of the growth period, in the anaphase it appeared premature. 4. From the point of view crop production, processing T5yield reached a significant level. Straw mulch measures with significant production potential, other treatments have shown production.In a word, the different measures of conservation tillage have different characteristics of the environmental effect, farmers should choose in reason based on the production of the main problems. Meantime, this study also showed that in the irrigated areas as well as semi-arid areas, plastic film mulching should be selected and applicated carefully.