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近二十年来,世界粮食产量增长较快。如把今天的农业生产技术与传统农业相比,已经发生了很大变化。这里择要编述的国外农业技术改革十例,有的已经行之有效,起到增产效果,有的则是一些设想,尚待进一步研究与试验。 1.棉花窄行栽培技术近年来,美国和澳大利亚都在推广棉花窄行栽培新技术,棉花行距缩小到十八至四十厘米,每亩株数由二千五百到八千株增加到三至五万株。棉花窄行密植的优点,首先是免除中
In the past 20 years, the world’s grain output has increased rapidly. If we compare today’s agricultural production technologies with traditional agriculture, great changes have taken place. There are ten foreign agricultural technology reforms that we have chosen to make here, and some of them have been effective and have been effective in increasing output. Some have some assumptions yet to be further studied and tested. 1. Narrow cotton cultivation technology In recent years, the United States and Australia are promoting a new narrow-width cotton cultivation techniques. The cotton spacing is reduced to 18 to 40 cm and the number of trees per mu is increased from 2,500 to 8,000 to 3 to Fifty thousand The advantages of narrow planting of cotton, the first is exempt