【摘要】 研究了灌溉条件下,PAM对于土壤孔隙度的改变由此带来的对于紫花苜蓿出苗率和出苗整齐度的影响,并且采用了实物对照、图表和数据分析的方法,提出了一种有利于北方广大地区种植苜蓿提高出苗率和整齐度的有效途径。更多还原

【Abstract】 This paper studies the effect of PAM during the irrigation on clover burgeon rate and uniformity by changing the soil porosity. Through analyzing pictures of object, graphs and data, an appropriate dosage of PAM in clovers farming for China’s northern areas is introduced.更多还原