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油菜是我县的传统油料作物。近10年来面积增加了2.5倍,单产翻了一番,在农业生产中占有举足轻重的地位。但是,近7年来我县油菜亩产徘徊在200斤上下。经调查分析,其主要原因是:贪青晚熟,倒伏减产;回茬油菜弱苗低产;品种混杂退化严重;病虫危害加重。为此,我们于1980年提出了相应的改革措施: 一、更新品种,实行隔繁提纯根据我县目前自然、耕作栽培条件,油菜品种要求抗冻、抗倒、抗病,中早熟并具有
Rape is my county’s traditional oil crops. Over the past 10 years, the area has increased by 2.5 times and the yield has doubled, occupying a decisive position in agricultural production. However, in the past seven years, the output of rape in our county hovered around 200 kg. The investigation and analysis, the main reasons are: late greyness, lodging and yield reduction; weak stubble seedling stubble yield; serious deterioration of hybrids; pests and diseases increased. To this end, we put forward corresponding reform measures in 1980: First, update the species, the implementation of isolation and purification According to the current nature of my county, farming and cultivation conditions, rape varieties require antifreeze, anti-down, disease resistance, premature and have