论文部分内容阅读
野燕麦是目前麦田混杂最严重和危害性最大的一种杂草。根据调查,1962年咸宁县滨湖公社星光四大队麦田普遍混杂有野燕麦,其中有52.7亩野燕麦的混杂率达67％;1961年应城县聖滩公社星光大队钱南生产队12亩小麦,混有33％的野燕麦,肖畈公社楊林生产队有84亩小麦,因野燕麦的严重混杂危害而失收。1963年鄂城县凡口区蒲团公社调查,麦田野燕麦一般混杂率平均为25.13％,平均最高混杂率为45.85％,绝对最高混杂率达62.8％。(表一) 麦田野燕麦的混杂及其程度的轻重,系由多方面因素所造成的。据调查,重茬地混杂多,换茬地混杂少;旱地混杂多,水田混杂少;早播地混杂多,晚播地混杂少;晚茬地混杂多,早茬地混杂少;条播地混杂多,点播地混杂少;稀播地混杂多,密播地混杂
Wild oats is the most serious and most harmful weed in the wheat field. According to the survey, in 1962, Xianning County Binhu commune Stars four brigade corn fields are generally mixed with wild oats, of which 52.7 acres of wild oats mixed rate of 67%; 1961 Yingcheng County Shengtong commune Starlight Brigade Qiannan production team 12 acres of wheat, Mixed with 33% of the wild oats, Xiao Yang commune Yang Lin production team has 84 acres of wheat, due to serious miscellaneous wild oats damage. In 1963, the investigation of Futuan commune in Eokou County showed that average misclassification rate of wild oats in wheat field was 25.13% on average, the average maximum confounding rate was 45.85%, and the absolute maximum confounding rate was 62.8%. (Table 1) The mix of wild oats in wheat fields and their severity are caused by many factors. According to the survey, the stubble is more mixed and the stubble is less mixed; the dry land is mixed more and the paddy is less mixed; the early sowing is more mixed and the late sowing is less mixed; the late stubble is more mixed and the stubble is less mixed; , On-demand mixed with less; sparse broadcast mixed, secret broadcast mixed