论文部分内容阅读
随着农作物产量的大幅度提高,作物秸秆也相应增加。为充分利用这项自然资源,从1979年开始,我市在农田、果园推广了覆草栽培技术,均有一定的增产效果。增产幅度2.2—53.8％,平均增产16.5％。 一、增产原因 1.改善了作物生长发育的环境条件,保墒、防草,保护土壤结构,利于作物的生长发育。据测定,覆盖的玉米株高比对照高16.8厘米,最大叶面积系数增加0.37个百分点。叶面积大,光合产量高。根层数增多0.6层,条数增多13.9条,吸收范
With the substantial increase in crop yields, crop stalks also increased accordingly. In order to make full use of this natural resource, from 1979, the city popularized the lawn mulching cultivation technology in farmland and orchard, all of which had a certain yield increase effect. 2.2-53.8% increase rate of production, an average increase of 16.5%. First, the reasons for increasing production 1. Improve the environmental conditions of crop growth and development, moisture, grass, soil structure protection, conducive to crop growth and development. It was determined that the covered maize plant height 16.8 cm higher than the control, the maximum leaf area coefficient increased 0.37 percentage points. Large leaf area, high photosynthetic yield. An increase of 0.6 root layer, the number of articles increased by 13.9, absorption Fan