论文部分内容阅读
近年来我区旱地以麦—玉—苕为骨干套作的三熟制,已发展到117万亩,超过土面积的一半。麦—玉—苕三熟制的发展,有力地促进了旱粮的增产。但不少地方存在开厢行比不合理的现象。为找出合理的开厢宽度及行比,达到三熟三高产的目的,我所于1979年与铜梁、璧山县农科所联合进行了麦玉苕开厢宽度及小春预留行比与三熟产量关系的试验。供试品种小麦为“繁六”、玉米为“郑单2号”、红苕为“68—21”。据多点试验证明,在中等肥力条件下,中厢带植对半开
In recent years, dry land in our area to wheat - jade - 苕 as the backbone of the three cooked system, has grown to 117 mu, more than half of the soil area. The development of the three-crop system of wheat-jade-stirrup has effectively promoted the increase of drought-resistant crops. However, there are many places where there is an unreasonable phenomenon in opening a car. In order to find out the reasonable opening width and row ratio, to achieve the purpose of high yield of three crops and three crops, I was in Tongliang and Bishan County Agricultural Science Institute jointly carried out in 1979 wheat opening width and opening ratio of wheat Trials and yield tests. The wheat varieties tested were “Fanliu”, maize “Zhengdan 2” and “Hongqi” “68-21”. According to more tests proved that medium fertility conditions, in the box with half-open plant