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作者设计了三种滴灌方法来研究番茄根际土壤中的氮、水分的分布,根的生长和分布,以及氮和水分吸收的关系。供试品种为Hosen Eilon,1979年8月13日播种。畦距50厘米,畦高25厘米,30天后定苗,每公顷25000株土1000株。60天后搭架。试验分三个处理:(一)生长期的总灌水量为620mm,一天灌一次;(二)灌水量介于处理一与处理三之间,一天灌三次;(三)灌水量为330mm,一天一次。排水孔安装在每株番茄周围,排水量每小时2.5±0.21升。连续取土样测定根的分布和根重。土样体积为
The authors designed three drip irrigation methods to study nitrogen, moisture distribution, root growth and distribution, and the relationship between nitrogen and water uptake in tomato rhizosphere soil. The test variety was Hosen Eilon, sown on August 13, 1979.畦 distance 50 cm, 畦 height 25 cm, 30 days after Dingmiao, 1,000 hectares of soil 1000 plants. 60 days after the ride. The experiment is divided into three treatments: (1) The total irrigation amount during the growth period is 620 mm, once a day; (2) The irrigation amount is between treatment one and treatment three, three times a day; once. Drain holes were installed around each tomato and the displacement was 2.5 ± 0.21 liters per hour. Take soil samples continuously to determine root distribution and root weight. Soil sample volume is