我队地处关中平原西部,以小麦、玉米一年两熟栽培为主。生产上夏秋两料争时矛盾比较突出,影响进一步粮食增产。我们认为,夏秋两料争时矛盾的主要方面在玉米。因为夏玉米一晚熟,后期受低温影响,灌浆不好,影响产量;同时收获较迟,不利下料小麦的施肥、整地,延迟播种,是形成三类麦田的主要原因。因此,争取夏玉米早熟高产,是进一步提高小麦产量,获得全年粮食高产所需解决的一个问题。近几年来我们开展了夏玉米早熟高产的栽培,获得了较好的效果。全大队夏玉米1971年平均亩产达793斤,较文化大革命前的1965年亩产500斤左右增产约60％。在特大干旱的1973年全大队玉米亩产806斤,一料过了“长江”,第九生产队亩产达905斤,有 My team is located in the western Guanzhong Plain, mainly wheat and corn cultivation in two crops a year. The conflict between the two materials in summer and autumn in production is quite prominent, which will affect further grain output. In our opinion, the main contradiction between summer and autumn is corn. Because of a late maturity of summer maize, late by the low temperature, poor grouting, affecting the yield; at the same time late harvest, unfavorable wheat fertilization, land preparation, delayed seeding is the main reason for the formation of three types of wheat fields. Therefore, to strive for early maturity and high yield of summer corn is a problem that needs to be solved to further increase the yield of wheat and obtain the high yield of grain throughout the year. In recent years, we carried out early summer corn high yield cultivation, get better results. The entire group of summer maize in 1971 an average of 793 kilograms per mu, more than 500 kilograms before the Cultural Revolution 1965 mu yield of about 60%. In the exceptionally arid 1973, the entire unit produced 806 kilograms of corn per mu, a material over the “Yangtze River”, the ninth production team mu yield of 905 pounds, there