不同耕作方式对枣园土壤水分及枣树生长发育的影响

Effects of Soil Moisture and Growth of Jujube by Different Conservation Tillage Technology in the Jujube Orchard

通过不同耕作措施的实施,对枣园土壤水分、枣树生长发育、枣果生长动态影响的研究,从而探讨不同耕作方式在旱作农业试验区的适应性。结果表明:不同覆草可提高土壤水分含量,其中旋耕覆草处理的土壤含水量最高为13.58%,传统耕作最低7.47%。整个生育期旋耕覆草处理与传统耕作、免耕覆草、深耕覆草处理相比,旋耕覆草处理的综合生长量高于其他三个处理(株高、茎粗、二次枝长、二次枝长),促进了枣树的生长发育。8月6日到26日为枣果快速生长时期,8月26日到9月6日生长达到最大,免耕覆草生育期推迟约10天。综合考虑不同耕作方式的效应,旋耕覆草处理比较适宜于本地区的推广、应用。

The soil moisture of jujube, jujube growth and jujube fruit growth were determined at different tillage measures to explore the suitability of different tillage methods on dryland farming experimental zone. The results showed that different grass mulching could improve the soil water content, the highest soil water content （WC） was rotary tillage straw mulching treatment with the WC was of 13. 58%, the lowest was conventional tillage with the WC was 7. 47%. Compared with other treatments, the jujube~ comprehensive de- velopment （plant height, stem diameter, branch length two times, two times shoots） in the rotary tillage straw mulching treatment was higher than that of the conventional tillage, no - tillage straw mulching, deep - tillage straw mulching, the rotary tillage straw mulching treatment could promote the development of jujube. The periods of August 6 to 26 was the fruit rapid growth period, and August 26 to September 6 was the maximum fruit growth period. In the no tillage straw mulch treatment the jujube~ growth period delayed was post- poned about 10 days. Considering the effect of different deep tillage straw mulching measures, the rotary tillage with straw mulching treatment was suitable in this area.