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稻田三棱草的生物学特性和它的发生危害规律,虽然基本上已经搞清,但由于没有充分为群众掌握应用,所以至今灌区的一些国营农场和社队,仍有相当大的一部分稻田受到三棱草的威胁,甚至发生草荒,影响了水稻产量的进一步提高。据1974年区农垦局对11个国营农场的调查,仅受三棱草危害而造成半草荒的稻田面积达3,000多亩,完全草荒的稻田近1,000亩,导致了这些稻田的严重减产。据调查分析,发生草荒和半草荒的原因有以下几
Although the biological characteristics of Tripartite weibull and the law of its occurrence and damage have basically been clarified, some state farms and communes and brigades in the irrigated area have still suffered a considerable part of their paddy fields due to the lack of application to the masses. The threat of Sanxiancao, even the grassland shortage, affecting the further increase of rice yield. According to the 1974 State Bureau of Reclamation’s investigation of 11 state-owned farms, the paddy field, which was only damaged by the San Prussia grasslands, resulted in an area of 3,000 mu of paddy field and almost 1,000 mu of totally irrigated paddy fields, leading to serious cuts in these paddy fields. According to the survey and analysis, there are the following reasons for the shortage of grass and the shortage of grass