沼肥有固体也有液体。沼液含钙(据化验含钙量为158ppm),含吲哚乙酸、赤霉素和较高溶量的铵盐和氨。沼肥又是在厌气下发酵的产物,是一种无病源菌肥料,因此沼肥具有防蔬菜生理性缺素病和抑制病菌生长的功能。1989年作者曾用沼肥对辣椒做了防止落花的试验,从始花期开始,每7天喷1次,连喷3次沼液,第7天调查喷沼肥比不喷的落花率减少10％。喷沼液后的胡萝卜光滑红润,开裂减轻75％。另外,沼液还含有机酸和挥发性氨气,因此对害虫有刺激、腐蚀和熏蒸作用,对菜青虫、菜粉蝶、菜螟、夜蛾等鳞翅目幼虫有10—50％的杀伤力。加入适量敌敌畏等低毒农药对黄条魻、猿叶类成虫杀伤力还可提高。注意事项:①封闭严。②用泼施法必须加30％左右清水稀释。③与低毒农药混施比单一使用低毒 Biogas is also solid and liquid. Biogas slurry containing calcium (according to the test of calcium content of 158ppm), with indole acetic acid, gibberellin and higher soluble ammonium salt and ammonia. Biogas fertilizer is the product of anaerobic fermentation, which is a kind of fertilizer without pathogen bacteria. Therefore, biogas fertilizer has functions of preventing physiological deficiency of vegetables and inhibiting the growth of germs. In 1989, the author used the biogas fertilizer to prevent peppers from falling off. From the beginning of flowering, they sprayed once every seven days and even sprayed three times of biogas slurry. On the seventh day, the rate of sprayed marsh was reduced by 10 %. After spraying the liquid carrot glossy rosy, cracking to reduce 75%. In addition, the biogas slurry also contains organic acids and volatile ammonia, so the pest irritation, corrosion and fumigation, cabbage caterpillars, cabbage butterfly, cabbage beetle, lepidoptera larvae and other 10-50% lethal. Addition of appropriate amount of dichlorvos and other low-toxic pesticides on the yellow clam, ape leaves adults can also increase the lethality. Matters needing attention: ① closed strict. ② with cast method must add about 30% diluted with water. ③ mixed with low toxicity pesticides than single use of low toxicity