论文部分内容阅读
1、顶凌耙地,顶浆打垄机翻的地块,当耕层化冻5厘米深时、即可开始顶凌耙地。耕层解冻10—15厘米深时,就开始顶浆打垄,达到三犁成垄,将底肥施入垄底,随起垄镇压,在土壤煞浆前将垄起完,以备播种。 2、适时早播,抢墒播种当地温稳定通过7℃时,土壤含水量在20%左右即可开犁播种;当含水量低于18%时,在地温稳定通过5℃时抢墒播种。播种应按玉米品种晚、中、早依次安排。 3、催芽坐水种,抗旱保苗
1, the top of the ridge rake, apricot ridge machine turn the land, when the top layer of soil freezing 5 cm deep, you can start top Ling rake. When the topsoil is thawed 10-15 centimeters deep, it starts to hit the ridge to hit the ridge and reaches the ridge of the three plows. The bottom fertilizer is applied to the ridge and repressed with the ridge, and the ridge will be drained before the soil is sharpened for sowing. 2, timely sowing, grab moisture sowing local temperature and stability through 7 ℃, the soil moisture content of about 20% can be plow sowing; when the water content is less than 18%, when the ground temperature by 5 ℃ grab moisture sowing. Seeding should be corn varieties late, middle and early arrangement in turn. 3, germination take water, drought seedlings