论文部分内容阅读
本試驗为研究水稻田不同翻耕深度和夏季耕耙对水稻土的肥力变化及对連作早晚稻生長发育的影响和增产效果。一、試验設計試驗地土壤为浙南平原地区,发育于淺海沉积母質的水稻土,質地粘重,耕作深度为3市寸左右,全氮量0.2244—0.2783％,有机質量3.639—4.692％,碳氮率为9.41—9.84∶1,說明表土有机質腐殖質化程度相当高,土塥在10公分以下开始形成,全剖面层次过渡不明显,50
This experiment was conducted to study the effects of different tillage depths and summer rakes on the fertility of paddy soils and the effects on the growth and development of continuous cropping rice and its yield increase. I. Experimental design The soil used for the experiment was paddy soil in the southern Zhejiang plain and developed in the shallow sea sedimentary parent material with a thick sticky texture. The tillage depth was about 3 inches, the total nitrogen content was 0.2244-0.2783%, and the organic mass was 3.639-4.692% Carbon and nitrogen rate of 9.41-9.84: 1, indicating that the degree of surface humus organic matter is very high, soil 塥 10 cm below the beginning of the formation, the entire section level transition is not obvious, 50