论文部分内容阅读
近20年来,我国果树业发展十分迅速,至1999年底,总面积已达866.7万公顷以上,总产达6237.6万吨。但由于栽培管理大多较为粗放,尤其是施肥不合理,偏施氮肥,少施或不施有机肥等原因,致使各种果树生长发育不良、各种缺素普遍发生,且单产低、质量差。大量的果树科学试验和生产实践证明,科学增施肥料,特别是增施有机质肥料,并做到有机无机肥料配合施用,是提高产量和品质的最重要措施之一。然而由于我国果树大多采取清耕法管理园土,加之农
In the past 20 years, the fruit tree industry in our country has developed rapidly. By the end of 1999, the total area has reached 8.667 million hectares with a total output of 62.376 million tons. However, most of the cultivation and management are more extensive, especially unreasonable fertilization, partial nitrogen fertilizer, less or no organic fertilizer and other reasons, resulting in poor growth and development of various fruit trees, all kinds of lack of common occurrence, and low yield and poor quality. A large number of fruit trees scientific experiments and production practices have proved that the scientific application of fertilizers, especially the application of organic fertilizers, and organic and inorganic fertilizers to do with the application, is to increase production and quality of one of the most important measures. However, most of the fruit trees in our country adopt the law of clearing land to manage the garden soil, together with the agriculture