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一、前言以“大豆——高粱——谷子”轮作式为主体的耕作制度是东北地区最普遍的耕作制度,也是黑龙江省最普遍的耕作制度。“大豆——高粱——谷子”耕作制度在轮作方面是按照大豆——高粱——谷子的顺序换茬播种;在耕作方面是大豆扣种,高粱及谷子(耒不)种,高粱是第一(耒不),谷子是第二(耒不),也就是按“两(耒不)一扣”土壤耕作制来耕种;在施肥方面是在输换的三年内,逢扣种时施一次底粪,(耒不)种时施口粪,或不施口粪,也就是“三年一槎粪”。
I. INTRODUCTION The cultivation system based on the “soybean-sorghum-millet” rotation is the most common farming system in Northeast China and the most common farming system in Heilongjiang Province. Soybean-sorghum-millet farming systems were switched cropping in the order of soybean-sorghum-millet in rotation; soybean buckling, sorghum and millet (No), millet is the second (no), that is, according to “two (not) a buckle” soil farming system to cultivate; in fertilization is in the exchange of three years, Fecal, (not) species Shi Shi dung, or not dung, that is, “three years a feces.”