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“小麦夏播,一年两熟”问题引起了人们的注意。我国北方许多农村科学实验小组早就开展了双季麦(或称复种麦)试验,南方一些农业单位也在研究就地夏播加速选育三麦(即大麦、小麦、元麦)新品种的问题(图1)。我们从1972年开始观察试验。现将1974年观察的夏播麦幼穗发育情况,结合以前的试验结果作一简单介绍。一三衰各类品种和杂交材料,在南京自然条件下夏播,不需要经过春化处理,都可以进行幼穂发育 1974年夏播试验选用三麦品种24个。其中除1973年的11个品种继续试验外,又增选墨西哥小麦品种3个、缅甸和南斯拉夫小麦品种各1个,还有早熟三号大麦和757元麦。选用杂交材料的杂种一代(F_1)
The issue of “summer wheat sowing, double ripening each year” has aroused people’s attention. Many rural experimental groups in northern China have already started the experiment of double cropping wheat (or double cropping wheat), and some agricultural units in south China are also studying the accelerated planting of new crop of three wheat (ie barley, wheat and wheat) in summer Problem (Figure 1). We have observed the experiment since 1972. The 1974 observed summer sowing panicle development, combined with the previous test results for a brief introduction. A variety of three varieties and hybrids decline in summer conditions in Nanjing, summer sowing, do not need to undergo vernalization, can be young juvenile development in 1974 summer sowing test selection of 24 varieties of three wheat. In addition to the 11 varieties in 1973 to continue the test, the addition of three Mexican wheat varieties, Myanmar and Yugoslavia each one wheat varieties, as well as precocious three barley and 757 yuan wheat. Selection hybrids hybrid generation (F_1)