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为利用林间荒地,我们选择桐树(属高乔木)林地进行了栽培苜蓿实验。一、基本要求 1.利用高乔木林下地种植苜蓿,要求林间透光率在30％以上,最少不低于20％,否则不宜种苜蓿。 2.播种宜选择有雨时机,宜在雨后或雨前进行,有灌水条件的地方可采用播种前灌水,以利保墒促种子发芽。盐碱地区采用播前灌水和利用雨水降低地表土体含盐的作用,因为土体含盐量超过2.5‰,会抑制苜蓿种子发芽。二、栽培技术 1.整地;苜蓿种子小。因此要求地面平整,无大土块,墒情保持在耕作层(地面深0—20cm)含水量20—30％。
In order to make use of the wasteland in the forest, we chose the tung tree (belonging to the tall tree) to cultivate the alfalfa experiment. First, the basic requirements 1. The use of high arborvitae planting alfalfa, forest light transmittance of more than 30%, at least not less than 20%, otherwise not suitable for planting alfalfa. 2 sowing should choose the timing of the rain, should be carried out after the rain or rain, irrigation conditions can be used before irrigation, to promote soil moisture and promote seed germination. Salt and alkali areas using pre-sowing irrigation and the use of rainwater to reduce the role of surface soil salt, soil salinity exceeds 2.5 ‰, will inhibit alfalfa seed germination. Second, cultivation techniques 1. Land preparation; alfalfa seeds small. Therefore, the requirements of the formation of the ground, no large clods, moisture content maintained in the tillage layer (ground depth 0-20cm) moisture content of 20-30%.