论文部分内容阅读
夏薯生育期短,要想实现高产必须抓好以下几项技术: 1 追肥。在8月下旬,用磷酸二氢钾溶液灌根,或用10％草木灰水藻根,对秧苗长势弱的还可酌情追施少量氮肥。据试验,每667m~2用0.25～0.5kg磷酸二氢钾加水50～100kg进行灌根,比不灌根的增产10.5％～34.3％。进入9月份,为防止茎叶早衰,提高光合交通,促进根块膨大,每667m~2可用500g尿素、100g磷酸(?)
Short sweet potato growth period, in order to achieve high yield must grasp the following techniques: 1 top dressing. In late August, irrigation with potassium dihydrogen phosphate solution root, or 10% ash powder algae, the growth of seedlings may also be as low as possible to pursue a small amount of nitrogen fertilizer. According to the test, irrigation is carried out with 0.25-0.5kg potassium dihydrogen phosphate (50-100kg) every 667m ~ 2, which is 10.5% ~ 34.3% higher than that without irrigation. Into September, in order to prevent premature failure of stems and leaves, improve photosynthetic traffic, and promote the expansion of roots, every 667m ~ 2 available 500g urea, 100g phosphate (?)