The major observation items are the effect of the belt to the small range climate of the farmland, drainage and soil improving functions of the belt.
主要观测护田林带对农田小气候的影响、林带的排水作用以及改土效果。
Organic matter is invaluable as an addition to any soil whether applied as manure as a cover crop or as a soil-improving crop.
有机物施加于任何土壤都是很宝贵的，不管施加的是厩肥、覆盖作物或是改土作物。
Organic matter is invaluable as an addition to any soil whether applied as manure as a cover crop or as a soil-improving crop.
有机物施加于任何土壤都是很宝贵的，不管施加的是厩肥、覆盖作物或是改土作物。
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