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大荔县朝邑公社新关大队,地处关中平原,洛河流入黄河的汇合地区,耕地面积3140亩,大部分为砂壤土,基本具备渠井灌溉条件,在作物的构成上粮田约占总面积的60％,是一个以粮为主、粮棉并举的种植区。作物种类单纯,除小麦、玉米棉花外,其它作物甚少。自1971年粮食亩产上《纲要》以后,多年来平均亩产一直徘徊在700斤左右。肥料不足,是影响该队粮食产量的关键问题。要改变这种状况目前必须增加有机肥料,大力发展养猪事业,妥善解决猪的精粗饲料来源问题。为此,我们于1974～1978年间在该队进行了玉米、豆类间套的养地作用及其生态条件的研究。
Dali County, Chai Yap commune Xin Guan Brigade, located in the Guanzhong Plain, Luohe into the confluence of the Yellow River, 3140 acres of arable land, mostly sandy loam, basically with irrigation conditions, the composition of the crop of grain about The total area of 60%, is a grain-based, grain and cotton planting areas simultaneously. Simple crop species, with the exception of wheat, corn, cotton, other crops very little. Since the “outline” of grain output per mu in 1971, the average yield per mu has been hovering around 700 kg for many years. Insufficient fertilizer is a key issue affecting the team’s food production. To change this situation, it is necessary to increase organic fertilizers, vigorously develop the pig raising business, and properly solve the problem of the source of fine fodder for pigs. To this end, we carried out in the team from 1974 to 1978, corn, beans intercropping and the ecological conditions of the study.