一亩山地可以产多少斤苜蓿?

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2025-03-31 22:39:20
推荐回答(2个)
回答1:

在水肥比较好的条件下,紫花苜蓿一般一年可以割3-5茬,一般亩产鲜苜蓿4000-6000公斤,或0.5-0.6万公斤,高产可达8000kg。

其中第一次青割占40~50%,通常3.73kg鲜草(如在初花期割,含水分按77.5%算)晒制1kg干草(含水分按16%算)。第一茬可产500kg干草。如按割四茬算,年产量按4500kg算,平均每茬产鲜草1125kg,或产干草302kg。 附:几公斤青草才能晒一公斤干草。公式为: ﹙100—干草含水量﹚÷﹙100﹣青草含水量﹚=﹙100﹣16﹚÷﹙100﹣77.5﹚=3.73kg 其中干草一般含水量为15%~18%。如平均按16.5%计。
苜蓿青草营养生长期含水份82%,则需4.64kg青草晒1kg干草。花前期含水量为80.1%,则需4.2kg青草晒1kg干草。初花期收割时含水分77.5%左右,通常3.71kg鲜草晒制1kg干草。盛花期收割时含水量为74.7%,则需青草3.3kg。花后收割时含水量为70.7%,则需青草2.85kg。
种子在发芽后到开花之间的那段生长时期就叫“营养生长期”,开花后的生长就叫“生殖生长期”。 你可以根据实际情况自己算。产量可选择中等水平有代表性的地块,刈割1平方米后称一下重量,然后乘以667,即为一亩产量。
干草含水量可通过目测加以估计, 判断干草含水量的方法:
1. 含水量为15~16%:用手搓揉草束时能沙沙响,并发出嚓嚓声,但叶量丰富低矮的牧草不能发出嚓嚓声,反复折曲草束时茎秆折断,叶子干燥卷曲,茎上表皮用指甲几乎不能剥下。这类草适合堆垛保藏。
2. 含水量为16~18%:搓揉草束时没有干裂响声,而仅只沙沙响,折曲草束时只有部分植物折断,上部茎秆能留下折曲的痕迹,但茎秆折不断,叶子有时卷曲,上部叶子软,表皮用指甲几乎不能剥下。这类草适合堆垛保藏。
3. 含水量为19~20%:渥紧草束时不能产生清脆声音,但粗黄的牧草有明显干裂响声,干草柔软,易埝成草辫,反复折曲而不断;在拧草辫时挤不出水来,但有潮湿感觉。禾本科草表皮剥不掉;豆科草上部茎的表皮有时能剥掉。堆垛保藏危险。
4. 含水量为23~25%:搓揉没有沙沙响声;折曲草束时,在折曲处有水珠出现,手插入草堆里有凉的感觉。不能堆垛保藏。

回答2:

进口种子,一亩一吨多,且蛋白含量高
国内的亩产一吨左右,但蛋白要差于进口的

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