我团小麦种植面积较大,麦收中为不影响翻地作业,要抽掉部分人力将麦秸烧掉。但如果能将麦秸在收获过程中,切碎撒在地里,经过耕翻腐烂,会提高土壤肥力。据测定,亩产200斤的小麦,每亩纯秸秆700多斤,这些秸秆腐烂后,可相近于施入同等数量的鲜马粪。在白浆土地区茎秆还田的增产作用更为显著。过去将麦秸烧掉不但浪费劳力,还有造成荒原火灾的危险,而且肥力损失大,又不均匀。根据上述情况,我团于一九七四年,在GT-4.9B联合收获机上 I planted a larger area of ​​wheat, wheat harvest does not affect the turning operations, to remove some of the manpower to burn wheat straw. However, if the wheat straw can be harvested and shredded in the ground during harvesting, soil fertility will increase after tillage and tillage. According to the test, 200 kg of wheat per mu, pure straw per mu 700 kilos, these stalks after decay, can be applied to the same amount of fresh horse manure applied. Stalks in the albino soil crop yield increase effect is more significant. Burning straw in the past wastes not only wasted labor, but also creates the danger of wilderness fires, and the loss of fertility is large and uneven. Based on the above, my mission was on the GT-4.9B Combine Harvester in 1974