论文部分内容阅读
棉花省工栽培法是以减少投工、降低成本、增加经济效益为宗旨,以早发稳长培育壮苗为管理目标的一种新型的程序简化的省工栽培方法。现将其主要措施介绍如下。一、改进耕地方法以保墒为中心,又包括“三改”:一改冬耕为秋耕,即早耕地。前作收获后及时耕翻,越早耕保墒效果越好,最好随收随耕,不晒茬。据测定,前作收获后,及时耕的比收后半个月再耕的土壤水分含量可提高3—5％。二改过去冬耕、春耕二次耕翻为一次性秋深耕。春天干旱多风土壤蒸发量大,不宜进行春耕。三改过去的冬耕晒垡为秋耕后及时耙平耢盖不留耙印,减少土壤水分蒸发。
The cotton cultivation method is a new type of simplified provincial cultivation method that aims at reducing investment, reducing costs and increasing economic benefits. Now the main measures are described below. First, improve the method of arable land to focus on soil moisture, but also include “three changes”: a change of winter plowing for the autumn farming, that is, early land. For the timely harvest after harvesting, the earlier the effect of preserving soil moisture better, with the best income with the crop, not drying stubble. It is determined that after the harvest, the timely cultivation of soil than half a month after harvest tillage soil moisture content can be increased 3-5%. Second change to the past winter plowing, plowing secondary cultivation of spring autumn plowing. Spring drought windy soil evaporation, should not be plowed. Three changes in the past winter plowing sunning after autumn plowing razor flat cover without leaving raked to reduce soil moisture evaporation.