论文部分内容阅读
研究了吉林省龙井地区保护地不同水、肥(氮、磷)处理对土壤温度、CO2含量的影响,结果表明:灌水量、土壤湿度与各个土层土壤温度之间呈显著的负相关,但是由于土壤水分影响到土壤升温和保温两方面,在相同施肥量下,其综合作用的结果是,以灌水定额为为2水平(118.33 m3hm-2次-1)处理的土温最高;灌水定额最大的4水平处理土温最低;土壤湿度、温度与土壤中CO2含量都呈极显著的正相关;低量氮肥和高量磷肥可使土壤中CO2含量增加;通过灌水、氮肥、磷肥的三因素四水平的水肥耦合实验研究发现,水、氮、磷处理均为3水平的处理辣椒产量最高;若在此处理水平上提高灌水量或施磷肥量都会使辣椒产量降低,而土壤中CO2含量却升高明显。
The effects of different treatments of water and fertilizer (N and P) on soil temperature and CO2 content in Longjing area of Jilin Province were studied. The results showed that there was a significant negative correlation between irrigation amount and soil moisture and soil temperature in each soil layer. However, As a result of the influence of soil moisture on both soil temperature and heat preservation, the combined effect of the two treatments at the same fertilization level was that the soil temperature at the irrigation level of 2 (118.33 m3hm-2 times -1) was the highest; the irrigation standard was the largest Soil temperature and soil CO2 content are extremely significant positive correlation; low amount of nitrogen fertilizer and high amount of phosphate fertilizer can increase the content of soil CO2; through irrigation, nitrogen, phosphorus three-factor four The experiment of horizontal coupling of water and fertilizer found that the yield of peppers treated with 3 levels of water, nitrogen and phosphorus was the highest. If increasing the amount of water or phosphate fertilizer could reduce the yield of pepper and the content of CO2 in soil High obvious.