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七十年代中期以来,川西平原随着生产条件的改善,小麦生产上多采用窄行条播,这样做虽然具有土地直接利用率较高、麦苗分布较分散、利于分蘖发生和争取较高穗数等优点,但是群体不易控制、田间通风透光不良、倒伏较重,这些缺点也不易克服。为了探求更好的播种方式,以适应进一步高产的要求,我们引进川西丘陵黄壤粘土区小窝密植和外省放宽行距的作法,于1978—1981年在平原布点进行了小窝密植、窄行条播、宽行条播和宽窄行条播等四种方式的试验示范,结果表明:小窝密植比各种形式条
Since the mid-1970s, with the improvement of production conditions in the western Sichuan plain, narrow strip sowing has been mostly used in wheat production. Although this method has the advantages of direct land utilization rate, scattered wheat seedlings, favorable tillering and higher spike numbers Advantages, but the group is not easy to control, field ventilation and poor light, heavy lodging, these shortcomings are not easy to overcome. In order to explore better sowing methods to meet the requirements of further high yield, we introduced small densely covered planting in the clay soil area of the hilly area in the western Sichuan and relaxation of spacing in other provinces. During the period from 1978 to 1981, Wide strip broadcast and narrow strip broadcast and other four ways of demonstration, the results show that: a smaller density than the various forms of bar