论文部分内容阅读
近年来,我们试验冬小麦带青压土越冬,能够有效地防止冻害。越冬前在小麦行间开沟起土压青苗,并在沟内施氮磷混合肥料,有条件时可以结合浇冬水,浇后及时耙一次。带状套种田可在空畦取土压麦。压土时间:当日平均气温4-5℃时即可进行。压土厚度:一般1-1.5寸,以1.2寸最好。压土太厚时虽然防冻效果好,但影响麦苗返青。第二年3月中下旬,当日平均气温
In recent years, we test winter wheat with green soil overwintering, which can effectively prevent frost damage. Before winter, ditch the trenches from the rows of wheat to soil pressure young shoots, and nitrogen and phosphorus fertilizer in the ditch, when conditions can be combined with winter water, timely raking after pouring time. Ribbon farming sets in the air can be borrowed soil pressure wheat. Pressing time: the average temperature of the day 4-5 ℃ can be carried out. Pressure soil thickness: 1-1.5 inches in general to 1.2 inches the best. Although the soil is too thick antifreeze effect, but affect wheat seedling green. The second year in late March, the average temperature of the day