论文部分内容阅读
通过露地及促成型栽培草毒吸肥规律以及不同肥料水平对草莓产量效益影响的研究,表明露地栽培和促成型栽培草莓有着不同的吸肥特点,露地草莓由于近4个月的时间处于越冬休眠期,前期吸收养分仅占整个生育期的5%~15%,后期吸收的养分占整个生育期的50%以上,N的吸收高峰在膨果期,占整个生育期的46.2%,P的吸收高峰出现在膨果期和收获期,占整个生育期的70%,而K的吸收在收获期最多,达整个生育期的51.8%。促成型栽培草每由于没有休眠期,且有二次结果高峰,营养生长和生殖生长交替进行,营养生长时吸收氮的比例较高,而生殖生长占主导地位时,尤其是果实膨大以后,磷钾吸收的比例迅速升高,达苗期的2~6倍。不同肥料水平试验结果表明,圳地草莓在施用有机肥的基础上,以氮(N)210kg/hm2,磷(P2O5)210kg/hm2,钾(K2O)210kg/hm2为最佳,氮磷钾比例为1:1:1。
Through the study on the law of fertilizers absorption and the effect of different fertilizers on yield and yield of strawberries, it is shown that the open-field and fertilized cultivars have different absorption characteristics. The open-field strawberries are dormant in the last 4 months The absorption of nutrients during the first and last stages accounted for only 5% ~ 15% of the whole growth period, and the nutrients absorbed in the latter period accounted for more than 50% of the whole growth period. The peak of N absorption was in the expansion period, accounting for 46.2% of the whole growth period. P The absorption peak appeared in the inflating and harvesting periods, accounting for 70% of the whole growth period, while the absorption of K was the most during the harvesting period, reaching 51.8% of the whole growing period. Formed cultivated grass each have no dormancy period, and the second peak results, vegetative and reproductive growth alternated, vegetative growth, the higher the proportion of nitrogen absorption, and reproductive growth dominant, especially after the fruit enlargement, phosphorus The proportion of potassium absorption rapidly increased to 2 to 6 times seedling stage. The results of different fertilizer levels showed that on the basis of applying organic manure, Shenzhen strawberry was the best with 210kg / hm2 of nitrogen (N2O), 210kg / hm2 of phosphorus (P2O5) and 210kg / hm2 of potassium (K2O) 1: 1: 1.