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我县每年平整土地大约在5,000亩以上,如何保证新修土地当年增产,是农业生产中一个重要课题,对此我们连续几年进行了调查研究,总结群众经验,对新修地的特点和增产措施有了一些初步认识,现介绍如下: 一、新修地的特点每一块新修地,都有挖方、填方和不挖不填三部分,这三部分土壤肥力、理化性状均不一样。川地在不施肥的情况下,挖方部分亩产最低,填方部分亩产次之,不挖不填亩产最高。这三部分的特点分别是:挖方,由于去掉了肥沃表土,表现为薄、死、硬,是减产幅度最大的部分;不挖不填,
The annual land leveling in our county is about 5,000 mu. How to ensure the increase of newly-built land in that year is an important issue in agricultural production. For this reason, we conducted investigations and studies for several years in succession, summarized the masses’ experiences, Measures have some preliminary understanding, are introduced as follows: First, the characteristics of the new site Each new site, there are digging, filling and not digging do not fill three parts, the three parts of soil fertility, physical and chemical properties are different. In the case of no fertilization in Sichuan Province, the digging part of the minimum yield per mu, filling part of the mu yield followed, not digging no mu yield highest. The characteristics of these three parts are: Excavation, due to the removal of fertile topsoil, manifested as thin, dead, hard, is the largest part of the reduction in production; do not dig do not fill,