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米麦间种是辽宁省铁岭县旱粮区的一种主要增产种植形式。米麦间种比玉米与大豆间种共生期短。玉米与大豆间种共生期从5月10日到10月3日为149天,而米麦间种共生期从5月10日到6月17日为68天,共生期减少81天。它能使玉米通风、透光、增加二氧化碳含量。据生育期间上午10时30分在对比田用仪器测定:清种玉米风速是1.25m/s,“三比一”米麦间种为2.2m/s,风速增加0.95m/s;光照清种玉米为25,000米烛光,“三比一”米麦间种为32,500米烛光,照度差
Rice and wheat intercropping is one of the main planting forms for increasing grain yield in Tieling County, Liaoning Province. Intergrowth between rice and wheat is shorter than that between corn and soybean. The symbiotic period between maize and soybean was 149 days from May 10 to October 3, while the intergrowth period between maize and wheat was 68 days from May 10 to June 17, and the symbiotic period was reduced by 81 days. It can make corn ventilation, light, increase the carbon dioxide content. According to the comparison of field instruments, the wind speed of cleared maize was 1.25m / s, the ratio of “three to one” rice was 2.2m / s, and the wind speed increased 0.95m / s. 25,000-meter candle for maize, 32,500-meter candle for “three-in-one” mummies, and poor illumination