【摘要】 连续三年六造的试验表明,在只耙不犁的少耕田撒播水稻比在按传统方法又犁又耙的全耕田撒播水稻产量较高,增产率为5.1～14.7％。而在少耕田或全耕田撒播稻的产量又比插植稻高,增产率为4.96～15.3％,并从一些生理生态特性分析了产量较高的原因。通过试验还明确了控制播种量是防止或减少撒播稻倒伏并获得较高产量的重要措施,以及掌握了除草剂去草胺,杀草丹和二甲四氯在撒播田的施用技术。而调查研究表明,用少耕撒播法生产水稻比用传统耕作法生产水稻提高了劳动生产率和具有较好的经济效益。更多还原

【Abstract】 It has been proved that higher rice yield would be resulted in seed broadcast sowing in minimum tillage field than in conventional method tillage field. Through continuous experiment of six times in three years, the average yield of rice has increased 5.1-14.7%. Seed broadcast sowing always gives higher yield than seedling planting either in minimum tillage or in thorough tillage field, always with increased yield to 4.96-15.3%. Some of the yield increased reasons have been studied from the standpoint of the physiological and ecological factors. Control the amount of seeds used in boadcast sowing is a very important measure to save seeds and to prevent or reduce rice plant falling over, thus a comparatively higher yield might be obtained. The technique to use the different kinds of herbicides, such as butachlor.benthiocarb and MCPA on seed broadcast sowing is also important.By adopting the minimum tillage and seed broadcast sowing method in rice field, one can heighten the labourproductlvity and so get a better economic benefit.更多还原